55123513538572 has 12 divisors (see below), whose sum is σ = 102140628027480. Its totient is φ = 25940476959296.

The previous prime is 55123513538557. The next prime is 55123513538591. The reversal of 55123513538572 is 27583531532155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405319952422 + ... + 405319952557.

It is an arithmetic number, because the mean of its divisors is an integer number (8511719002290).

Almost surely, 2^{55123513538572} is an apocalyptic number.

It is an amenable number.

55123513538572 is a deficient number, since it is larger than the sum of its proper divisors (47017114488908).

55123513538572 is a wasteful number, since it uses less digits than its factorization.

55123513538572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810639905000 (or 810639904998 counting only the distinct ones).

The product of its digits is 18900000, while the sum is 55.

The spelling of 55123513538572 in words is "fifty-five trillion, one hundred twenty-three billion, five hundred thirteen million, five hundred thirty-eight thousand, five hundred seventy-two".