101555400522 has 16 divisors (see below), whose sum is σ = 209662762752. Its totient is φ = 32759806560.

The previous prime is 101555400493. The next prime is 101555400523. The reversal of 101555400522 is 225004555101.

It is a self number, because there is not a number n which added to its sum of digits gives 101555400522.

It is not an unprimeable number, because it can be changed into a prime (101555400523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272998203 + ... + 272998574.

It is an arithmetic number, because the mean of its divisors is an integer number (13103922672).

Almost surely, 2^101555400522 is an apocalyptic number.

101555400522 is an abundant number, since it is smaller than the sum of its proper divisors (108107362230).

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

101555400522 is a wasteful number, since it uses less digits than its factorization.

101555400522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545996813.

The product of its (nonzero) digits is 10000, while the sum is 30.

Adding to 101555400522 its reverse (225004555101), we get a palindrome (326559955623).

The spelling of 101555400522 in words is "one hundred one billion, five hundred fifty-five million, four hundred thousand, five hundred twenty-two".