55591436612 has 12 divisors (see below), whose sum is σ = 97374520320. Its totient is φ = 27770145096.

The previous prime is 55591436599. The next prime is 55591436633. The reversal of 55591436612 is 21663419555.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6388412 + ... + 6397107.

It is an arithmetic number, because the mean of its divisors is an integer number (8114543360).

Almost surely, 2^55591436612 is an apocalyptic number.

It is an amenable number.

55591436612 is a deficient number, since it is larger than the sum of its proper divisors (41783083708).

55591436612 is a wasteful number, since it uses less digits than its factorization.

55591436612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12786610 (or 12786608 counting only the distinct ones).

The product of its digits is 972000, while the sum is 47.

The spelling of 55591436612 in words is "fifty-five billion, five hundred ninety-one million, four hundred thirty-six thousand, six hundred twelve".