38725577728 has 22 divisors (see below), whose sum is σ = 77413339556. Its totient is φ = 19362788352.

The previous prime is 38725577711. The next prime is 38725577731. The reversal of 38725577728 is 82777552783.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18907950 + ... + 18909997.

Almost surely, 2^38725577728 is an apocalyptic number.

It is an amenable number.

38725577728 is a deficient number, since it is larger than the sum of its proper divisors (38687761828).

38725577728 is an equidigital number, since it uses as much as digits as its factorization.

38725577728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37817967 (or 37817949 counting only the distinct ones).

The product of its digits is 46099200, while the sum is 61.

The spelling of 38725577728 in words is "thirty-eight billion, seven hundred twenty-five million, five hundred seventy-seven thousand, seven hundred twenty-eight".