2949247421757 has 240 divisors, whose sum is σ = 5649282600192. Its totient is φ = 1519251552000.

The previous prime is 2949247421741. The next prime is 2949247421801. The reversal of 2949247421757 is 7571247429492.

2949247421757 is a `hidden beast` number, since 2 + 9 + 4 + 92 + 474 + 2 + 1 + 75 + 7 = 666.

It is not a de Polignac number, because 2949247421757 - 2⁴ = 2949247421741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 2949247421694 and 2949247421703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2949247421957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 620761132 + ... + 620765882.

Almost surely, 2^{2949247421757} is an apocalyptic number.

2949247421757 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2949247421757 is a deficient number, since it is larger than the sum of its proper divisors (2700035178435).

2949247421757 is a wasteful number, since it uses less digits than its factorization.

2949247421757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070 (or 5054 counting only the distinct ones).

The product of its digits is 71124480, while the sum is 63.

The spelling of 2949247421757 in words is "two trillion, nine hundred forty-nine billion, two hundred forty-seven million, four hundred twenty-one thousand, seven hundred fifty-seven".