38961921235212 has 72 divisors (see below), whose sum is σ = 102773009923584. Its totient is φ = 12422172017376.

The previous prime is 38961921235177. The next prime is 38961921235243. The reversal of 38961921235212 is 21253212916983.

38961921235212 is a `hidden beast` number, since 3 + 8 + 9 + 6 + 1 + 92 + 1 + 23 + 521 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21366723 + ... + 23118405.

Almost surely, 2^{38961921235212} is an apocalyptic number.

It is an amenable number.

38961921235212 is an abundant number, since it is smaller than the sum of its proper divisors (63811088688372).

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

38961921235212 is a wasteful number, since it uses less digits than its factorization.

38961921235212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778579 (or 1778574 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The spelling of 38961921235212 in words is "thirty-eight trillion, nine hundred sixty-one billion, nine hundred twenty-one million, two hundred thirty-five thousand, two hundred twelve".