26264982153978 has 160 divisors (see below), whose sum is σ = 64393963780608. Its totient is φ = 7965653529600.

The previous prime is 26264982153973. The next prime is 26264982154013. The reversal of 26264982153978 is 87935128946262.

26264982153978 is a `hidden beast` number, since 2 + 6 + 2 + 6 + 4 + 9 + 82 + 1 + 539 + 7 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (26264982153973) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 79831273 + ... + 80159603.

Almost surely, 2^{26264982153978} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26264982153978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32196981890304).

26264982153978 is an abundant number, since it is smaller than the sum of its proper divisors (38128981626630).

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

26264982153978 is a wasteful number, since it uses less digits than its factorization.

26264982153978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329330 (or 329321 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 72.

The spelling of 26264982153978 in words is "twenty-six trillion, two hundred sixty-four billion, nine hundred eighty-two million, one hundred fifty-three thousand, nine hundred seventy-eight".