26401520253 has 16 divisors (see below), whose sum is σ = 35810423360. Its totient is φ = 17298520704.

The previous prime is 26401520213. The next prime is 26401520267. The reversal of 26401520253 is 35202510462.

It is not a de Polignac number, because 26401520253 - 2⁸ = 26401519997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26401520253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26401520213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151018 + ... + 274971.

It is an arithmetic number, because the mean of its divisors is an integer number (2238151460).

Almost surely, 2^26401520253 is an apocalyptic number.

It is an amenable number.

26401520253 is a deficient number, since it is larger than the sum of its proper divisors (9408903107).

26401520253 is a wasteful number, since it uses less digits than its factorization.

26401520253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426348.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 26401520253 in words is "twenty-six billion, four hundred one million, five hundred twenty thousand, two hundred fifty-three".