55646320005 has 40 divisors (see below), whose sum is σ = 99813305592. Its totient is φ = 29659554432.

The previous prime is 55646319961. The next prime is 55646320021. The reversal of 55646320005 is 50002364655.

It is a happy number.

55646320005 is a `hidden beast` number, since 5 + 5 + 646 + 3 + 2 + 0 + 0 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2059162884 + 53587157121 = 45378^2 + 231489^2 .

It is not a de Polignac number, because 55646320005 - 2⁹ = 55646319493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 621019 + ... + 704951.

Almost surely, 2^55646320005 is an apocalyptic number.

It is an amenable number.

55646320005 is a deficient number, since it is larger than the sum of its proper divisors (44166985587).

55646320005 is a wasteful number, since it uses less digits than its factorization.

55646320005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85587 (or 85578 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 55646320005 in words is "fifty-five billion, six hundred forty-six million, three hundred twenty thousand, five".