38678630813515 has 16 divisors (see below), whose sum is σ = 57867250256640. Its totient is φ = 24111354273120.

The previous prime is 38678630813513. The next prime is 38678630813561. The reversal of 38678630813515 is 51531803687683.

It is a happy number.

It is not a de Polignac number, because 38678630813515 - 2¹ = 38678630813513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38678630813513) 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, 50231987685 + ... + 50231988454.

It is an arithmetic number, because the mean of its divisors is an integer number (3616703141040).

Almost surely, 2^{38678630813515} is an apocalyptic number.

38678630813515 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

38678630813515 is a deficient number, since it is larger than the sum of its proper divisors (19188619443125).

38678630813515 is a wasteful number, since it uses less digits than its factorization.

38678630813515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100463976162.

The product of its (nonzero) digits is 87091200, while the sum is 64.

The spelling of 38678630813515 in words is "thirty-eight trillion, six hundred seventy-eight billion, six hundred thirty million, eight hundred thirteen thousand, five hundred fifteen".