26490450445631 has 4 divisors (see below), whose sum is σ = 26490496860264. Its totient is φ = 26490404031000.

The previous prime is 26490450445619. The next prime is 26490450445633. The reversal of 26490450445631 is 13654405409462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26490450445631 - 2⁶ = 26490450445567 is a prime.

It is a super-2 number, since 2×26490450445631² (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 (26490450445633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22340420 + ... + 23496281.

It is an arithmetic number, because the mean of its divisors is an integer number (6622624215066).

Almost surely, 2^{26490450445631} is an apocalyptic number.

26490450445631 is a deficient number, since it is larger than the sum of its proper divisors (46414633).

26490450445631 is an equidigital number, since it uses as much as digits as its factorization.

26490450445631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46414632.

The product of its (nonzero) digits is 12441600, while the sum is 53.

The spelling of 26490450445631 in words is "twenty-six trillion, four hundred ninety billion, four hundred fifty million, four hundred forty-five thousand, six hundred thirty-one".