20697479602 has 16 divisors (see below), whose sum is σ = 31562147232. Its totient is φ = 10177279200.

The previous prime is 20697479581. The next prime is 20697479783.

It is a happy number.

20697479602 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 20697479602.

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, 47968 + ... + 209035.

It is an arithmetic number, because the mean of its divisors is an integer number (1972634202).

Almost surely, 2^20697479602 is an apocalyptic number.

20697479602 is a deficient number, since it is larger than the sum of its proper divisors (10864667630).

20697479602 is a wasteful number, since it uses less digits than its factorization.

20697479602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257673.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 20697479602 in words is "twenty billion, six hundred ninety-seven million, four hundred seventy-nine thousand, six hundred two".