155120523544 has 32 divisors (see below), whose sum is σ = 338035046400. Its totient is φ = 65353439520.

The previous prime is 155120523479. The next prime is 155120523557. The reversal of 155120523544 is 445325021551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23471352 + ... + 23477959.

It is an arithmetic number, because the mean of its divisors is an integer number (10563595200).

Almost surely, 2^155120523544 is an apocalyptic number.

155120523544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155120523544 is an abundant number, since it is smaller than the sum of its proper divisors (182914522856).

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

155120523544 is a wasteful number, since it uses less digits than its factorization.

155120523544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46949383 (or 46949379 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 155120523544 in words is "one hundred fifty-five billion, one hundred twenty million, five hundred twenty-three thousand, five hundred forty-four".