18069517572 has 24 divisors (see below), whose sum is σ = 42556250016. Its totient is φ = 5966880768.

The previous prime is 18069517561. The next prime is 18069517589. The reversal of 18069517572 is 27571596081.

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, 7035133 + ... + 7037700.

It is an arithmetic number, because the mean of its divisors is an integer number (1773177084).

Almost surely, 2^18069517572 is an apocalyptic number.

18069517572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18069517572 is an abundant number, since it is smaller than the sum of its proper divisors (24486732444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18069517572 is a wasteful number, since it uses less digits than its factorization.

18069517572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14072947 (or 14072945 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 18069517572 in words is "eighteen billion, sixty-nine million, five hundred seventeen thousand, five hundred seventy-two".