155551415112 has 48 divisors (see below), whose sum is σ = 421345567500. Its totient is φ = 51843027456.

The previous prime is 155551415111. The next prime is 155551415167. The reversal of 155551415112 is 211514155551.

155551415112 is a `hidden beast` number, since 1 + 5 + 5 + 551 + 41 + 51 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 144937058436 + 10614356676 = 380706^2 + 103026^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (155551415111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361764 + ... + 664812.

Almost surely, 2^155551415112 is an apocalyptic number.

155551415112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155551415112 is an abundant number, since it is smaller than the sum of its proper divisors (265794152388).

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

155551415112 is a wasteful number, since it uses less digits than its factorization.

155551415112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310190 (or 310183 counting only the distinct ones).

The product of its digits is 25000, while the sum is 36.

The spelling of 155551415112 in words is "one hundred fifty-five billion, five hundred fifty-one million, four hundred fifteen thousand, one hundred twelve".