55231206912 has 300 divisors, whose sum is σ = 191772050580. Its totient is φ = 15779764224.

The previous prime is 55231206889. The next prime is 55231206931. The reversal of 55231206912 is 21960213255.

It is a happy number.

55231206912 is a `hidden beast` number, since 5 + 523 + 120 + 6 + 9 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2018539 + ... + 2045717.

Almost surely, 2^55231206912 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 55231206912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95886025290).

55231206912 is an abundant number, since it is smaller than the sum of its proper divisors (136540843668).

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

55231206912 is an equidigital number, since it uses as much as digits as its factorization.

55231206912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27223 (or 27191 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 55231206912 in words is "fifty-five billion, two hundred thirty-one million, two hundred six thousand, nine hundred twelve".