155221511360 has 28 divisors (see below), whose sum is σ = 369621224688. Its totient is φ = 62088604416.

The previous prime is 155221511339. The next prime is 155221511369. The reversal of 155221511360 is 63115122551.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (155221511369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242533292 + ... + 242533931.

Almost surely, 2^155221511360 is an apocalyptic number.

155221511360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155221511360 is an abundant number, since it is smaller than the sum of its proper divisors (214399713328).

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

155221511360 is an equidigital number, since it uses as much as digits as its factorization.

155221511360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485067240 (or 485067230 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 155221511360 in words is "one hundred fifty-five billion, two hundred twenty-one million, five hundred eleven thousand, three hundred sixty".