20602664345 has 32 divisors (see below), whose sum is σ = 27221633280. Its totient is φ = 14899610880.

The previous prime is 20602664333. The next prime is 20602664353. The reversal of 20602664345 is 54346620602.

It is not a de Polignac number, because 20602664345 - 2¹² = 20602660249 is a prime.

It is a super-2 number, since 2×20602664345² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20602664299 and 20602664308.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 908687 + ... + 931083.

It is an arithmetic number, because the mean of its divisors is an integer number (850676040).

Almost surely, 2^20602664345 is an apocalyptic number.

It is an amenable number.

20602664345 is a deficient number, since it is larger than the sum of its proper divisors (6618968935).

20602664345 is a wasteful number, since it uses less digits than its factorization.

20602664345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22865.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 20602664345 in words is "twenty billion, six hundred two million, six hundred sixty-four thousand, three hundred forty-five".