38599386516 has 132 divisors (see below), whose sum is σ = 107294143572. Its totient is φ = 12108351744.

The previous prime is 38599386509. The next prime is 38599386523. The reversal of 38599386516 is 61568399583.

38599386516 is a `hidden beast` number, since 3 + 8 + 599 + 38 + 6 + 5 + 1 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (38599386509) and next prime (38599386523).

It can be written as a sum of positive squares in 2 ways, for example, as 35741414916 + 2857971600 = 189054^2 + 53460^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 43 ways as a sum of consecutive naturals, for example, 4010526 + ... + 4020138.

It is an arithmetic number, because the mean of its divisors is an integer number (812834421).

Almost surely, 2^38599386516 is an apocalyptic number.

38599386516 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38599386516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53647071786).

38599386516 is an abundant number, since it is smaller than the sum of its proper divisors (68694757056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38599386516 is an equidigital number, since it uses as much as digits as its factorization.

38599386516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9664 (or 9635 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 63.

The spelling of 38599386516 in words is "thirty-eight billion, five hundred ninety-nine million, three hundred eighty-six thousand, five hundred sixteen".