38125199987 has 16 divisors (see below), whose sum is σ = 45883372800. Its totient is φ = 30946341600.

The previous prime is 38125199971. The next prime is 38125199989. The reversal of 38125199987 is 78999152183.

It is a cyclic number.

It is not a de Polignac number, because 38125199987 - 2⁴ = 38125199971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38125199989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281237 + ... + 394137.

It is an arithmetic number, because the mean of its divisors is an integer number (2867710800).

Almost surely, 2^38125199987 is an apocalyptic number.

38125199987 is a deficient number, since it is larger than the sum of its proper divisors (7758172813).

38125199987 is a wasteful number, since it uses less digits than its factorization.

38125199987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115466.

The product of its digits is 9797760, while the sum is 62.

The spelling of 38125199987 in words is "thirty-eight billion, one hundred twenty-five million, one hundred ninety-nine thousand, nine hundred eighty-seven".