38725684647 has 24 divisors (see below), whose sum is σ = 56319854544. Its totient is φ = 23657197824.

The previous prime is 38725684607. The next prime is 38725684649. The reversal of 38725684647 is 74648652783.

It is a happy number.

It is not a de Polignac number, because 38725684647 - 2⁶ = 38725684583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38725684649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209308 + ... + 348225.

It is an arithmetic number, because the mean of its divisors is an integer number (2346660606).

Almost surely, 2^38725684647 is an apocalyptic number.

38725684647 is a deficient number, since it is larger than the sum of its proper divisors (17594169897).

38725684647 is a wasteful number, since it uses less digits than its factorization.

38725684647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557699 (or 557686 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 60.

The spelling of 38725684647 in words is "thirty-eight billion, seven hundred twenty-five million, six hundred eighty-four thousand, six hundred forty-seven".