155341320100 has 18 divisors (see below), whose sum is σ = 337090664834. Its totient is φ = 62136528000.

The previous prime is 155341320089. The next prime is 155341320119. The reversal of 155341320100 is 1023143551.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 38967549604 + 116373770496 = 197402^2 + 341136^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 776706501 + ... + 776706700.

Almost surely, 2^155341320100 is an apocalyptic number.

155341320100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155341320100 is an abundant number, since it is smaller than the sum of its proper divisors (181749344734).

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

155341320100 is a wasteful number, since it uses less digits than its factorization.

155341320100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553413215 (or 1553413208 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 155341320100 its reverse (1023143551), we get a palindrome (156364463651).

The spelling of 155341320100 in words is "one hundred fifty-five billion, three hundred forty-one million, three hundred twenty thousand, one hundred".