155542546656 has 432 divisors, whose sum is σ = 565301842560. Its totient is φ = 39622348800.

The previous prime is 155542546613. The next prime is 155542546693. The reversal of 155542546656 is 656645245551.

155542546656 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 42 + 546 + 6 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11062831 + ... + 11076881.

It is an arithmetic number, because the mean of its divisors is an integer number (1308569080).

Almost surely, 2^155542546656 is an apocalyptic number.

155542546656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155542546656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282650921280).

155542546656 is an abundant number, since it is smaller than the sum of its proper divisors (409759295904).

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

155542546656 is a wasteful number, since it uses less digits than its factorization.

155542546656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14127 (or 14099 counting only the distinct ones).

The product of its digits is 21600000, while the sum is 54.

The spelling of 155542546656 in words is "one hundred fifty-five billion, five hundred forty-two million, five hundred forty-six thousand, six hundred fifty-six".