101555425044 has 36 divisors (see below), whose sum is σ = 271810109844. Its totient is φ = 31860525312.

The previous prime is 101555425039. The next prime is 101555425073. The reversal of 101555425044 is 440524555101.

101555425044 is a `hidden beast` number, since 1 + 0 + 15 + 554 + 2 + 50 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28405731600 + 73149693444 = 168540^2 + 270462^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82969507 + ... + 82970730.

It is an arithmetic number, because the mean of its divisors is an integer number (7550280829).

Almost surely, 2^101555425044 is an apocalyptic number.

It is an amenable number.

101555425044 is an abundant number, since it is smaller than the sum of its proper divisors (170254684800).

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

101555425044 is a wasteful number, since it uses less digits than its factorization.

101555425044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165940264 (or 165940259 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 101555425044 in words is "one hundred one billion, five hundred fifty-five million, four hundred twenty-five thousand, forty-four".