26540636665612 has 48 divisors (see below), whose sum is σ = 47763462208000. Its totient is φ = 12894875419392.

The previous prime is 26540636665607. The next prime is 26540636665643. The reversal of 26540636665612 is 21656663604562.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442218118 + ... + 442278130.

Almost surely, 2^{26540636665612} is an apocalyptic number.

It is an amenable number.

26540636665612 is a deficient number, since it is larger than the sum of its proper divisors (21222825542388).

26540636665612 is a wasteful number, since it uses less digits than its factorization.

26540636665612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63890 (or 63888 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 58.

The spelling of 26540636665612 in words is "twenty-six trillion, five hundred forty billion, six hundred thirty-six million, six hundred sixty-five thousand, six hundred twelve".