39401457816 has 48 divisors (see below), whose sum is σ = 114585875640. Its totient is φ = 11257559040.

The previous prime is 39401457769. The next prime is 39401457817. The reversal of 39401457816 is 61875410493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39401457817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16751145 + ... + 16753496.

Almost surely, 2^39401457816 is an apocalyptic number.

It is an amenable number.

39401457816 is an abundant number, since it is smaller than the sum of its proper divisors (75184417824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39401457816 is a wasteful number, since it uses less digits than its factorization.

39401457816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33504664 (or 33504653 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 39401457816 in words is "thirty-nine billion, four hundred one million, four hundred fifty-seven thousand, eight hundred sixteen".