26491868212956 has 24 divisors (see below), whose sum is σ = 63485017520400. Its totient is φ = 8591957258112.

The previous prime is 26491868212939. The next prime is 26491868212967. The reversal of 26491868212956 is 65921286819462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29833184481 + ... + 29833185368.

It is an arithmetic number, because the mean of its divisors is an integer number (2645209063350).

Almost surely, 2^{26491868212956} is an apocalyptic number.

It is an amenable number.

26491868212956 is an abundant number, since it is smaller than the sum of its proper divisors (36993149307444).

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

26491868212956 is a wasteful number, since it uses less digits than its factorization.

26491868212956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59666369893 (or 59666369891 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 69.

The spelling of 26491868212956 in words is "twenty-six trillion, four hundred ninety-one billion, eight hundred sixty-eight million, two hundred twelve thousand, nine hundred fifty-six".