155387313100 has 36 divisors (see below), whose sum is σ = 337222353888. Its totient is φ = 62149048000.

The previous prime is 155387313097. The next prime is 155387313127. The reversal of 155387313100 is 1313783551.

It is a happy number.

It is a super-2 number, since 2×155387313100² (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 155387313100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1079370 + ... + 1214830.

It is an arithmetic number, because the mean of its divisors is an integer number (9367287608).

Almost surely, 2^155387313100 is an apocalyptic number.

155387313100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155387313100 is an abundant number, since it is smaller than the sum of its proper divisors (181835040788).

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

155387313100 is a wasteful number, since it uses less digits than its factorization.

155387313100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146946 (or 146939 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 155387313100 in words is "one hundred fifty-five billion, three hundred eighty-seven million, three hundred thirteen thousand, one hundred".