38978423868726 has 48 divisors (see below), whose sum is σ = 84534069494160. Its totient is φ = 12980379142080.

The previous prime is 38978423868707. The next prime is 38978423868803. The reversal of 38978423868726 is 62786832487983.

38978423868726 is a `hidden beast` number, since 3 + 8 + 97 + 8 + 423 + 8 + 6 + 87 + 26 = 666.

It is a Curzon number.

It is a congruent number.

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, 100920436 + ... + 101305928.

It is an arithmetic number, because the mean of its divisors is an integer number (1761126447795).

Almost surely, 2^{38978423868726} is an apocalyptic number.

38978423868726 is an abundant number, since it is smaller than the sum of its proper divisors (45555645625434).

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

38978423868726 is a wasteful number, since it uses less digits than its factorization.

38978423868726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390861 (or 390858 counting only the distinct ones).

The product of its digits is 9364045824, while the sum is 81.

The spelling of 38978423868726 in words is "thirty-eight trillion, nine hundred seventy-eight billion, four hundred twenty-three million, eight hundred sixty-eight thousand, seven hundred twenty-six".