38723632658865 has 64 divisors (see below), whose sum is σ = 85829004011520. Its totient is φ = 16092938243520.

The previous prime is 38723632658861. The next prime is 38723632658881. The reversal of 38723632658865 is 56885623632783.

38723632658865 is a `hidden beast` number, since 3 + 8 + 7 + 2 + 3 + 6 + 32 + 6 + 588 + 6 + 5 = 666.

It is not a de Polignac number, because 38723632658865 - 2² = 38723632658861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38723632658793 and 38723632658802.

It is not an unprimeable number, because it can be changed into a prime (38723632658861) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1862598199 + ... + 1862618988.

It is an arithmetic number, because the mean of its divisors is an integer number (1341078187680).

Almost surely, 2^{38723632658865} is an apocalyptic number.

38723632658865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38723632658865 is an abundant number, since it is smaller than the sum of its proper divisors (47105371352655).

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

38723632658865 is a wasteful number, since it uses less digits than its factorization.

38723632658865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725217219 (or 3725217213 counting only the distinct ones).

The product of its digits is 2090188800, while the sum is 72.

The spelling of 38723632658865 in words is "thirty-eight trillion, seven hundred twenty-three billion, six hundred thirty-two million, six hundred fifty-eight thousand, eight hundred sixty-five".