20642660362 has 16 divisors (see below), whose sum is σ = 31025733984. Its totient is φ = 10300770000.

The previous prime is 20642660303. The next prime is 20642660383. The reversal of 20642660362 is 26306624602.

It is a super-2 number, since 2×20642660362² (a number of 21 digits) contains 22 as substring.

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, 2544112 + ... + 2552212.

It is an arithmetic number, because the mean of its divisors is an integer number (1939108374).

Almost surely, 2^20642660362 is an apocalyptic number.

20642660362 is a deficient number, since it is larger than the sum of its proper divisors (10383073622).

20642660362 is a wasteful number, since it uses less digits than its factorization.

20642660362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10485.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 20642660362 in words is "twenty billion, six hundred forty-two million, six hundred sixty thousand, three hundred sixty-two".