55551521662 has 32 divisors (see below), whose sum is σ = 107954380800. Its totient is φ = 20819770848.

The previous prime is 55551521657. The next prime is 55551521743. The reversal of 55551521662 is 26612515555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8028862 + ... + 8035777.

It is an arithmetic number, because the mean of its divisors is an integer number (3373574400).

Almost surely, 2^55551521662 is an apocalyptic number.

55551521662 is a deficient number, since it is larger than the sum of its proper divisors (52402859138).

55551521662 is a wasteful number, since it uses less digits than its factorization.

55551521662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16064680.

The product of its digits is 450000, while the sum is 43.

The spelling of 55551521662 in words is "fifty-five billion, five hundred fifty-one million, five hundred twenty-one thousand, six hundred sixty-two".