26974665918690 has 64 divisors (see below), whose sum is σ = 75383648614656. Its totient is φ = 6049305130752.

The previous prime is 26974665918689. The next prime is 26974665918749. The reversal of 26974665918690 is 9681956647962.

It is a super-2 number, since 2×26974665918690² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1211788777 + ... + 1211811036.

It is an arithmetic number, because the mean of its divisors is an integer number (1177869509604).

Almost surely, 2^{26974665918690} is an apocalyptic number.

26974665918690 is an abundant number, since it is smaller than the sum of its proper divisors (48408982695966).

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

26974665918690 is a wasteful number, since it uses less digits than its factorization.

26974665918690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423599883.

The product of its (nonzero) digits is 2116316160, while the sum is 78.

The spelling of 26974665918690 in words is "twenty-six trillion, nine hundred seventy-four billion, six hundred sixty-five million, nine hundred eighteen thousand, six hundred ninety".