26121951988272 has 120 divisors (see below), whose sum is σ = 83772775527584. Its totient is φ = 7443405591552.

The previous prime is 26121951988247. The next prime is 26121951988273. The reversal of 26121951988272 is 27288915912162.

26121951988272 is a `hidden beast` number, since 2 + 6 + 1 + 2 + 19 + 519 + 88 + 27 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (26121951988273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34362133 + ... + 35114100.

Almost surely, 2^{26121951988272} is an apocalyptic number.

It is an amenable number.

26121951988272 is an abundant number, since it is smaller than the sum of its proper divisors (57650823539312).

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

26121951988272 is a wasteful number, since it uses less digits than its factorization.

26121951988272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69476627 (or 69476618 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 63.

The spelling of 26121951988272 in words is "twenty-six trillion, one hundred twenty-one billion, nine hundred fifty-one million, nine hundred eighty-eight thousand, two hundred seventy-two".