155107117100 has 72 divisors (see below), whose sum is σ = 378233187360. Its totient is φ = 54780295680.

The previous prime is 155107117049. The next prime is 155107117111. The reversal of 155107117100 is 1711701551.

It is a super-2 number, since 2×155107117100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2563865 + ... + 2623664.

Almost surely, 2^155107117100 is an apocalyptic number.

155107117100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155107117100 is an abundant number, since it is smaller than the sum of its proper divisors (223126070260).

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

155107117100 is a wasteful number, since it uses less digits than its factorization.

155107117100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5187579 (or 5187572 counting only the distinct ones).

The product of its (nonzero) digits is 1225, while the sum is 29.

Adding to 155107117100 its reverse (1711701551), we get a palindrome (156818818651).

The spelling of 155107117100 in words is "one hundred fifty-five billion, one hundred seven million, one hundred seventeen thousand, one hundred".