38784138375 has 64 divisors (see below), whose sum is σ = 65176151040. Its totient is φ = 20480720000.

The previous prime is 38784138361. The next prime is 38784138377. The reversal of 38784138375 is 57383148783.

It is not a de Polignac number, because 38784138375 - 2⁶ = 38784138311 is a prime.

It is a super-2 number, since 2×38784138375² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38784138377) 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, 41215405 + ... + 41216345.

It is an arithmetic number, because the mean of its divisors is an integer number (1018377360).

Almost surely, 2^38784138375 is an apocalyptic number.

38784138375 is a deficient number, since it is larger than the sum of its proper divisors (26392012665).

38784138375 is a wasteful number, since it uses less digits than its factorization.

38784138375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929 (or 1919 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 57.

The spelling of 38784138375 in words is "thirty-eight billion, seven hundred eighty-four million, one hundred thirty-eight thousand, three hundred seventy-five".