26340634621 has 8 divisors (see below), whose sum is σ = 31074665984. Its totient is φ = 21849374160.

The previous prime is 26340634597. The next prime is 26340634627. The reversal of 26340634621 is 12643604362.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26340634621 - 2⁵ = 26340634589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26340634627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60692490 + ... + 60692923.

It is an arithmetic number, because the mean of its divisors is an integer number (3884333248).

Almost surely, 2^26340634621 is an apocalyptic number.

It is an amenable number.

26340634621 is a deficient number, since it is larger than the sum of its proper divisors (4734031363).

26340634621 is a wasteful number, since it uses less digits than its factorization.

26340634621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121385451.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 26340634621 in words is "twenty-six billion, three hundred forty million, six hundred thirty-four thousand, six hundred twenty-one".