38431054657428 has 24 divisors (see below), whose sum is σ = 89674696929888. Its totient is φ = 12810032114976.

The previous prime is 38431054657393. The next prime is 38431054657433. The reversal of 38431054657428 is 82475645013483.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39428151 + ... + 40391102.

It is an arithmetic number, because the mean of its divisors is an integer number (3736445705412).

Almost surely, 2^{38431054657428} is an apocalyptic number.

It is an amenable number.

38431054657428 is an abundant number, since it is smaller than the sum of its proper divisors (51243642272460).

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

38431054657428 is a wasteful number, since it uses less digits than its factorization.

38431054657428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79859383 (or 79859381 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 60.

The spelling of 38431054657428 in words is "thirty-eight trillion, four hundred thirty-one billion, fifty-four million, six hundred fifty-seven thousand, four hundred twenty-eight".