155442013320 has 64 divisors (see below), whose sum is σ = 508719320640. Its totient is φ = 37682912000.

The previous prime is 155442013319. The next prime is 155442013387. The reversal of 155442013320 is 23310244551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58878231 + ... + 58880870.

It is an arithmetic number, because the mean of its divisors is an integer number (7948739385).

Almost surely, 2^155442013320 is an apocalyptic number.

155442013320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155442013320 is an abundant number, since it is smaller than the sum of its proper divisors (353277307320).

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

155442013320 is a wasteful number, since it uses less digits than its factorization.

155442013320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117759126 (or 117759122 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 155442013320 its reverse (23310244551), we get a palindrome (178752257871).

The spelling of 155442013320 in words is "one hundred fifty-five billion, four hundred forty-two million, thirteen thousand, three hundred twenty".