26442187061791 has 16 divisors (see below), whose sum is σ = 27239466209760. Its totient is φ = 25652173409280.

The previous prime is 26442187061789. The next prime is 26442187061809. The reversal of 26442187061791 is 19716078124462.

It is not a de Polignac number, because 26442187061791 - 2¹ = 26442187061789 is a prime.

It is a super-2 number, since 2×26442187061791² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26442187461791) 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, 267332341 + ... + 267431233.

It is an arithmetic number, because the mean of its divisors is an integer number (1702466638110).

Almost surely, 2^{26442187061791} is an apocalyptic number.

26442187061791 is a deficient number, since it is larger than the sum of its proper divisors (797279147969).

26442187061791 is a wasteful number, since it uses less digits than its factorization.

26442187061791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135546.

The product of its (nonzero) digits is 8128512, while the sum is 58.

The spelling of 26442187061791 in words is "twenty-six trillion, four hundred forty-two billion, one hundred eighty-seven million, sixty-one thousand, seven hundred ninety-one".