55105491456 has 160 divisors (see below), whose sum is σ = 171701956800. Its totient is φ = 17401651200.

The previous prime is 55105491443. The next prime is 55105491503. The reversal of 55105491456 is 65419450155.

55105491456 is a `hidden beast` number, since 5 + 5 + 105 + 4 + 91 + 456 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157756 + ... + 367556.

It is an arithmetic number, because the mean of its divisors is an integer number (1073137230).

Almost surely, 2^55105491456 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 55105491456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85850978400).

55105491456 is an abundant number, since it is smaller than the sum of its proper divisors (116596465344).

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

55105491456 is a wasteful number, since it uses less digits than its factorization.

55105491456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209847 (or 209825 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 55105491456 in words is "fifty-five billion, one hundred five million, four hundred ninety-one thousand, four hundred fifty-six".