155122243320 has 64 divisors (see below), whose sum is σ = 507672800640. Its totient is φ = 37605392000.

The previous prime is 155122243319. The next prime is 155122243369. The reversal of 155122243320 is 23342221551.

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

It is a congruent number.

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, 58757106 + ... + 58759745.

It is an arithmetic number, because the mean of its divisors is an integer number (7932387510).

Almost surely, 2^155122243320 is an apocalyptic number.

155122243320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155122243320 is an abundant number, since it is smaller than the sum of its proper divisors (352550557320).

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

155122243320 is a wasteful number, since it uses less digits than its factorization.

155122243320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117516876 (or 117516872 counting only the distinct ones).

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

Adding to 155122243320 its reverse (23342221551), we get a palindrome (178464464871).

The spelling of 155122243320 in words is "one hundred fifty-five billion, one hundred twenty-two million, two hundred forty-three thousand, three hundred twenty".