55999961880912 has 320 divisors, whose sum is σ = 191715346575360. Its totient is φ = 15302368958976.

The previous prime is 55999961880901. The next prime is 55999961880931. The reversal of 55999961880912 is 21908816999955.

55999961880912 is a `hidden beast` number, since 5 + 599 + 9 + 9 + 6 + 1 + 8 + 8 + 0 + 9 + 12 = 666.

55999961880912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 588849238 + ... + 588944330.

It is an arithmetic number, because the mean of its divisors is an integer number (599110458048).

Almost surely, 2^{55999961880912} 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 55999961880912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95857673287680).

55999961880912 is an abundant number, since it is smaller than the sum of its proper divisors (135715384694448).

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

55999961880912 is a wasteful number, since it uses less digits than its factorization.

55999961880912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103607 (or 103595 counting only the distinct ones).

The product of its (nonzero) digits is 1133740800, while the sum is 81.

The spelling of 55999961880912 in words is "fifty-five trillion, nine hundred ninety-nine billion, nine hundred sixty-one million, eight hundred eighty thousand, nine hundred twelve".