55855653436512 has 240 divisors, whose sum is σ = 174654608314032. Its totient is φ = 17450627973120.

The previous prime is 55855653436501. The next prime is 55855653436523. The reversal of 55855653436512 is 21563435655855.

55855653436512 is a `hidden beast` number, since 5 + 5 + 8 + 5 + 56 + 5 + 34 + 36 + 512 = 666.

It is an interprime number because it is at equal distance from previous prime (55855653436501) and next prime (55855653436523).

It is a super-2 number, since 2×55855653436512² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55855653436512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7989543 + ... + 13249305.

Almost surely, 2^{55855653436512} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55855653436512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87327304157016).

55855653436512 is an abundant number, since it is smaller than the sum of its proper divisors (118798954877520).

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

55855653436512 is a wasteful number, since it uses less digits than its factorization.

55855653436512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260043 (or 5260026 counting only the distinct ones).

The product of its digits is 324000000, while the sum is 63.

The spelling of 55855653436512 in words is "fifty-five trillion, eight hundred fifty-five billion, six hundred fifty-three million, four hundred thirty-six thousand, five hundred twelve".