155656066560 has 80 divisors (see below), whose sum is σ = 497613012336. Its totient is φ = 41508282368.

The previous prime is 155656066537. The next prime is 155656066561. The reversal of 155656066560 is 65660656551.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×155656066560² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155656066561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10126179 + ... + 10141538.

Almost surely, 2^155656066560 is an apocalyptic number.

155656066560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155656066560 is an abundant number, since it is smaller than the sum of its proper divisors (341956945776).

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

155656066560 is an equidigital number, since it uses as much as digits as its factorization.

155656066560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20267743 (or 20267727 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 155656066560 in words is "one hundred fifty-five billion, six hundred fifty-six million, sixty-six thousand, five hundred sixty".