26642565474 has 32 divisors (see below), whose sum is σ = 62140099200. Its totient is φ = 7612160976.

The previous prime is 26642565457. The next prime is 26642565479. The reversal of 26642565474 is 47456524662.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (26642565479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6470869 + ... + 6474984.

It is an arithmetic number, because the mean of its divisors is an integer number (1941878100).

Almost surely, 2^26642565474 is an apocalyptic number.

26642565474 is an abundant number, since it is smaller than the sum of its proper divisors (35497533726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26642565474 is a wasteful number, since it uses less digits than its factorization.

26642565474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12945879 (or 12945865 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 51.

The spelling of 26642565474 in words is "twenty-six billion, six hundred forty-two million, five hundred sixty-five thousand, four hundred seventy-four".