26640253900164 has 12 divisors (see below), whose sum is σ = 62160592433744. Its totient is φ = 8880084633384.

The previous prime is 26640253900087. The next prime is 26640253900171. The reversal of 26640253900164 is 46100935204662.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110010579162 + ... + 1110010579185.

Almost surely, 2^{26640253900164} is an apocalyptic number.

It is an amenable number.

26640253900164 is an abundant number, since it is smaller than the sum of its proper divisors (35520338533580).

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

26640253900164 is a wasteful number, since it uses less digits than its factorization.

26640253900164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220021158354 (or 2220021158352 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 26640253900164 in words is "twenty-six trillion, six hundred forty billion, two hundred fifty-three million, nine hundred thousand, one hundred sixty-four".