496721451491 has 8 divisors (see below), whose sum is σ = 522914631120. Its totient is φ = 470533266432.

The previous prime is 496721451463. The next prime is 496721451511. The reversal of 496721451491 is 194154127694.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 496721451491 - 2⁶ = 496721451427 is a prime.

It is a super-2 number, since 2×496721451491² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (496721451431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043630 + ... + 1443123.

It is an arithmetic number, because the mean of its divisors is an integer number (65364328890).

Almost surely, 2^496721451491 is an apocalyptic number.

496721451491 is a deficient number, since it is larger than the sum of its proper divisors (26193179629).

496721451491 is a wasteful number, since it uses less digits than its factorization.

496721451491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497285.

The product of its digits is 2177280, while the sum is 53.

The spelling of 496721451491 in words is "four hundred ninety-six billion, seven hundred twenty-one million, four hundred fifty-one thousand, four hundred ninety-one".