55317489929904 has 160 divisors (see below), whose sum is σ = 152253012683520. Its totient is φ = 17256411085824.

The previous prime is 55317489929881. The next prime is 55317489929917. The reversal of 55317489929904 is 40992998471355.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 848746662 + ... + 848811834.

It is an arithmetic number, because the mean of its divisors is an integer number (951581329272).

Almost surely, 2^{55317489929904} 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 55317489929904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76126506341760).

55317489929904 is an abundant number, since it is smaller than the sum of its proper divisors (96935522753616).

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

55317489929904 is a wasteful number, since it uses less digits than its factorization.

55317489929904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76499 (or 76493 counting only the distinct ones).

The product of its (nonzero) digits is 881798400, while the sum is 75.

The spelling of 55317489929904 in words is "fifty-five trillion, three hundred seventeen billion, four hundred eighty-nine million, nine hundred twenty-nine thousand, nine hundred four".