26660516635442 has 64 divisors (see below), whose sum is σ = 41428232524800. Its totient is φ = 12862765440000.

The previous prime is 26660516635397. The next prime is 26660516635469. The reversal of 26660516635442 is 24453661506662.

It is a happy number.

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, 673753034 + ... + 673792602.

It is an arithmetic number, because the mean of its divisors is an integer number (647316133200).

Almost surely, 2^{26660516635442} is an apocalyptic number.

26660516635442 is a deficient number, since it is larger than the sum of its proper divisors (14767715889358).

26660516635442 is a wasteful number, since it uses less digits than its factorization.

26660516635442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40283.

The product of its (nonzero) digits is 37324800, while the sum is 56.

The spelling of 26660516635442 in words is "twenty-six trillion, six hundred sixty billion, five hundred sixteen million, six hundred thirty-five thousand, four hundred forty-two".