55639386603 has 12 divisors (see below), whose sum is σ = 80432365000. Its totient is φ = 37063218816.

The previous prime is 55639386587. The next prime is 55639386617. The reversal of 55639386603 is 30668393655.

55639386603 is a `hidden beast` number, since 556 + 3 + 9 + 3 + 86 + 6 + 0 + 3 = 666.

It is not a de Polignac number, because 55639386603 - 2⁴ = 55639386587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55639386603.

It is not an unprimeable number, because it can be changed into a prime (55639386653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2463601 + ... + 2486082.

Almost surely, 2^55639386603 is an apocalyptic number.

55639386603 is a deficient number, since it is larger than the sum of its proper divisors (24792978397).

55639386603 is a wasteful number, since it uses less digits than its factorization.

55639386603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950938 (or 4950935 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 54.

The spelling of 55639386603 in words is "fifty-five billion, six hundred thirty-nine million, three hundred eighty-six thousand, six hundred three".