55661109604 has 12 divisors (see below), whose sum is σ = 97409257344. Its totient is φ = 27829893224.

The previous prime is 55661109547. The next prime is 55661109617. The reversal of 55661109604 is 40690116655.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57189 + ... + 338515.

It is an arithmetic number, because the mean of its divisors is an integer number (8117438112).

Almost surely, 2^55661109604 is an apocalyptic number.

It is an amenable number.

55661109604 is a deficient number, since it is larger than the sum of its proper divisors (41748147740).

55661109604 is a wasteful number, since it uses less digits than its factorization.

55661109604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330794 (or 330792 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 55661109604 in words is "fifty-five billion, six hundred sixty-one million, one hundred nine thousand, six hundred four".