39457814881 has 4 divisors (see below), whose sum is σ = 41534542000. Its totient is φ = 37381087764.

The previous prime is 39457814791. The next prime is 39457814897. The reversal of 39457814881 is 18841875493.

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 39457814881 - 2⁹ = 39457814369 is a prime.

It is a super-2 number, since 2×39457814881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39457874881) 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, 1038363531 + ... + 1038363568.

It is an arithmetic number, because the mean of its divisors is an integer number (10383635500).

Almost surely, 2^39457814881 is an apocalyptic number.

It is an amenable number.

39457814881 is a deficient number, since it is larger than the sum of its proper divisors (2076727119).

39457814881 is a wasteful number, since it uses less digits than its factorization.

39457814881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076727118.

The product of its digits is 7741440, while the sum is 58.

The spelling of 39457814881 in words is "thirty-nine billion, four hundred fifty-seven million, eight hundred fourteen thousand, eight hundred eighty-one".