47464840981 has 4 divisors (see below), whose sum is σ = 47469175200. Its totient is φ = 47460506764.

The previous prime is 47464840933. The next prime is 47464840999. The reversal of 47464840981 is 18904846474.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47464840981 - 2⁷ = 47464840853 is a prime.

It is a super-2 number, since 2×47464840981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47464843981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2150641 + ... + 2172598.

It is an arithmetic number, because the mean of its divisors is an integer number (11867293800).

Almost surely, 2^47464840981 is an apocalyptic number.

It is an amenable number.

47464840981 is a deficient number, since it is larger than the sum of its proper divisors (4334219).

47464840981 is a wasteful number, since it uses less digits than its factorization.

47464840981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334218.

The product of its (nonzero) digits is 6193152, while the sum is 55.

The spelling of 47464840981 in words is "forty-seven billion, four hundred sixty-four million, eight hundred forty thousand, nine hundred eighty-one".