155132712720 has 120 divisors (see below), whose sum is σ = 521694139200. Its totient is φ = 41312602368.

The previous prime is 155132712701. The next prime is 155132712733. The reversal of 155132712720 is 27217231551.

155132712720 is a `hidden beast` number, since 1 + 5 + 513 + 2 + 71 + 2 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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

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, 386301 + ... + 677859.

It is an arithmetic number, because the mean of its divisors is an integer number (4347451160).

Almost surely, 2^155132712720 is an apocalyptic number.

155132712720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155132712720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260847069600).

155132712720 is an abundant number, since it is smaller than the sum of its proper divisors (366561426480).

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

155132712720 is a wasteful number, since it uses less digits than its factorization.

155132712720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292317 (or 292308 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The spelling of 155132712720 in words is "one hundred fifty-five billion, one hundred thirty-two million, seven hundred twelve thousand, seven hundred twenty".