518535553372 has 24 divisors (see below), whose sum is σ = 908146262016. Its totient is φ = 259065275568.

The previous prime is 518535553343. The next prime is 518535553427. The reversal of 518535553372 is 273355535815.

It is a super-2 number, since 2×518535553372² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36491493 + ... + 36505699.

It is an arithmetic number, because the mean of its divisors is an integer number (37839427584).

Almost surely, 2^518535553372 is an apocalyptic number.

It is an amenable number.

518535553372 is a deficient number, since it is larger than the sum of its proper divisors (389610708644).

518535553372 is a wasteful number, since it uses less digits than its factorization.

518535553372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20697 (or 20695 counting only the distinct ones).

The product of its digits is 9450000, while the sum is 52.

The spelling of 518535553372 in words is "five hundred eighteen billion, five hundred thirty-five million, five hundred fifty-three thousand, three hundred seventy-two".