55861943402496 has 544 divisors, whose sum is σ = 186565513494528. Its totient is φ = 14443657297920.

The previous prime is 55861943402467. The next prime is 55861943402527. The reversal of 55861943402496 is 69420434916855.

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 3375947695 + ... + 3375964241.

Almost surely, 2^{55861943402496} is an apocalyptic number.

55861943402496 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55861943402496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93282756747264).

55861943402496 is an abundant number, since it is smaller than the sum of its proper divisors (130703570092032).

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

55861943402496 is a wasteful number, since it uses less digits than its factorization.

55861943402496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16823 (or 16793 counting only the distinct ones).

The product of its (nonzero) digits is 223948800, while the sum is 66.

The spelling of 55861943402496 in words is "fifty-five trillion, eight hundred sixty-one billion, nine hundred forty-three million, four hundred two thousand, four hundred ninety-six".