151205615550 has 72 divisors (see below), whose sum is σ = 443169927720. Its totient is φ = 36655905600.

The previous prime is 151205615479. The next prime is 151205615551. The reversal of 151205615550 is 55516502151.

151205615550 is a `hidden beast` number, since 1 + 51 + 2 + 0 + 56 + 1 + 5 + 550 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151205615551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15268345 + ... + 15278244.

It is an arithmetic number, because the mean of its divisors is an integer number (6155137885).

Almost surely, 2^151205615550 is an apocalyptic number.

151205615550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

151205615550 is an abundant number, since it is smaller than the sum of its proper divisors (291964312170).

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

151205615550 is a wasteful number, since it uses less digits than its factorization.

151205615550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30546618 (or 30546610 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 36.

The spelling of 151205615550 in words is "one hundred fifty-one billion, two hundred five million, six hundred fifteen thousand, five hundred fifty".