55405719682 has 64 divisors (see below), whose sum is σ = 91117301760. Its totient is φ = 25187008000.

The previous prime is 55405719647. The next prime is 55405719701. The reversal of 55405719682 is 28691750455.

It is a happy number.

It is a super-2 number, since 2×55405719682² (a number of 22 digits) contains 22 as substring.

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, 25733118 + ... + 25735270.

It is an arithmetic number, because the mean of its divisors is an integer number (1423707840).

Almost surely, 2^55405719682 is an apocalyptic number.

55405719682 is a deficient number, since it is larger than the sum of its proper divisors (35711582078).

55405719682 is a wasteful number, since it uses less digits than its factorization.

55405719682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499.

The product of its (nonzero) digits is 3024000, while the sum is 52.

The spelling of 55405719682 in words is "fifty-five billion, four hundred five million, seven hundred nineteen thousand, six hundred eighty-two".