55994907149664 has 288 divisors, whose sum is σ = 173129559515136. Its totient is φ = 15799083955200.

The previous prime is 55994907149639. The next prime is 55994907149669. The reversal of 55994907149664 is 46694170949955.

It is a self number, because there is not a number n which added to its sum of digits gives 55994907149664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55994907149669) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120147489 + ... + 120612639.

It is an arithmetic number, because the mean of its divisors is an integer number (601144303872).

Almost surely, 2^{55994907149664} 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 55994907149664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86564779757568).

55994907149664 is an abundant number, since it is smaller than the sum of its proper divisors (117134652365472).

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

55994907149664 is a wasteful number, since it uses less digits than its factorization.

55994907149664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465498 (or 465483 counting only the distinct ones).

The product of its (nonzero) digits is 2645395200, while the sum is 78.

The spelling of 55994907149664 in words is "fifty-five trillion, nine hundred ninety-four billion, nine hundred seven million, one hundred forty-nine thousand, six hundred sixty-four".