38917972105 has 16 divisors (see below), whose sum is σ = 48353776128. Its totient is φ = 30038976000.

The previous prime is 38917972087. The next prime is 38917972231. The reversal of 38917972105 is 50127971983.

It is not a de Polignac number, because 38917972105 - 2⁷ = 38917971977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327976 + ... + 430585.

It is an arithmetic number, because the mean of its divisors is an integer number (3022111008).

Almost surely, 2^38917972105 is an apocalyptic number.

It is an amenable number.

38917972105 is a deficient number, since it is larger than the sum of its proper divisors (9435804023).

38917972105 is a wasteful number, since it uses less digits than its factorization.

38917972105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758928.

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 38917972105 in words is "thirty-eight billion, nine hundred seventeen million, nine hundred seventy-two thousand, one hundred five".