155405640116352 has 32 divisors (see below), whose sum is σ = 412796231560080. Its totient is φ = 51801880038656.

The previous prime is 155405640116351. The next prime is 155405640116359. The reversal of 155405640116352 is 253611046504551.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×155405640116352² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (155405640116351) 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, 202351093518 + ... + 202351094285.

Almost surely, 2^{155405640116352} is an apocalyptic number.

155405640116352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155405640116352 is an abundant number, since it is smaller than the sum of its proper divisors (257390591443728).

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

155405640116352 is an equidigital number, since it uses as much as digits as its factorization.

155405640116352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404702187820 (or 404702187808 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 48.

The spelling of 155405640116352 in words is "one hundred fifty-five trillion, four hundred five billion, six hundred forty million, one hundred sixteen thousand, three hundred fifty-two".