101555025044 has 24 divisors (see below), whose sum is σ = 197535850848. Its totient is φ = 45290404640.

The previous prime is 101555025029. The next prime is 101555025053. The reversal of 101555025044 is 440520555101.

It is a super-2 number, since 2×101555025044² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101555025044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21771902 + ... + 21776565.

It is an arithmetic number, because the mean of its divisors is an integer number (8230660452).

Almost surely, 2^101555025044 is an apocalyptic number.

It is an amenable number.

101555025044 is a deficient number, since it is larger than the sum of its proper divisors (95980825804).

101555025044 is a wasteful number, since it uses less digits than its factorization.

101555025044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43548535 (or 43548533 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 101555025044 in words is "one hundred one billion, five hundred fifty-five million, twenty-five thousand, forty-four".