155622360100 has 81 divisors (see below), whose sum is σ = 341903691633. Its totient is φ = 61483633440.

The previous prime is 155622360059. The next prime is 155622360193. The reversal of 155622360100 is 1063226551.

The square root of 155622360100 is 394490.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 56024049636 + 99598310464 = 236694^2 + 315592^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 406324509 + ... + 406324891.

Almost surely, 2^155622360100 is an apocalyptic number.

155622360100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155622360100 is the 394490-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155622360100

155622360100 is an abundant number, since it is smaller than the sum of its proper divisors (186281331533).

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

155622360100 is an equidigital number, since it uses as much as digits as its factorization.

155622360100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 155622360100 its reverse (1063226551), we get a palindrome (156685586651).

The spelling of 155622360100 in words is "one hundred fifty-five billion, six hundred twenty-two million, three hundred sixty thousand, one hundred".