101538788251808 has 12 divisors (see below), whose sum is σ = 199904489370810. Its totient is φ = 50769394125888.

The previous prime is 101538788251783. The next prime is 101538788251841. The reversal of 101538788251808 is 808152887835101.

It can be written as a sum of positive squares in only one way, i.e., 97448249641744 + 4090538610064 = 9871588^2 + 2022508^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1586543566403 + ... + 1586543566466.

Almost surely, 2^{101538788251808} is an apocalyptic number.

It is an amenable number.

101538788251808 is a deficient number, since it is larger than the sum of its proper divisors (98365701119002).

101538788251808 is an equidigital number, since it uses as much as digits as its factorization.

101538788251808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173087132879 (or 3173087132871 counting only the distinct ones).

The product of its (nonzero) digits is 34406400, while the sum is 65.

The spelling of 101538788251808 in words is "one hundred one trillion, five hundred thirty-eight billion, seven hundred eighty-eight million, two hundred fifty-one thousand, eight hundred eight".