55918419656 has 16 divisors (see below), whose sum is σ = 114378585840. Its totient is φ = 25417463440.

The previous prime is 55918419653. The next prime is 55918419673. The reversal of 55918419656 is 65691481955.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55918419595 and 55918419604.

It is not an unprimeable number, because it can be changed into a prime (55918419653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317718206 + ... + 317718381.

It is an arithmetic number, because the mean of its divisors is an integer number (7148661615).

Almost surely, 2^55918419656 is an apocalyptic number.

It is an amenable number.

55918419656 is an abundant number, since it is smaller than the sum of its proper divisors (58460166184).

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

55918419656 is a wasteful number, since it uses less digits than its factorization.

55918419656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635436604 (or 635436600 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 59.

It can be divided in two parts, 55918 and 419656, that added together give a palindrome (475574).

The spelling of 55918419656 in words is "fifty-five billion, nine hundred eighteen million, four hundred nineteen thousand, six hundred fifty-six".