18699597707 has 24 divisors (see below), whose sum is σ = 23384701440. Its totient is φ = 14861523600.

The previous prime is 18699597667. The next prime is 18699597733. The reversal of 18699597707 is 70779599681.

It is not a de Polignac number, because 18699597707 - 2³⁰ = 17625855883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18699597737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169919 + ... + 257432.

It is an arithmetic number, because the mean of its divisors is an integer number (974362560).

Almost surely, 2^18699597707 is an apocalyptic number.

18699597707 is a deficient number, since it is larger than the sum of its proper divisors (4685103733).

18699597707 is a wasteful number, since it uses less digits than its factorization.

18699597707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427431 (or 427424 counting only the distinct ones).

The product of its (nonzero) digits is 60011280, while the sum is 68.

The spelling of 18699597707 in words is "eighteen billion, six hundred ninety-nine million, five hundred ninety-seven thousand, seven hundred seven".