26642642602 has 12 divisors (see below), whose sum is σ = 40451279490. Its totient is φ = 13160816648.

The previous prime is 26642642569. The next prime is 26642642623. The reversal of 26642642602 is 20624624662.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21025290001 + 5617352601 = 145001^2 + 74949^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 953077 + ... + 980632.

Almost surely, 2^26642642602 is an apocalyptic number.

26642642602 is a deficient number, since it is larger than the sum of its proper divisors (13808636888).

26642642602 is an equidigital number, since it uses as much as digits as its factorization.

26642642602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933877 (or 1933794 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 26642642602 in words is "twenty-six billion, six hundred forty-two million, six hundred forty-two thousand, six hundred two".