26430613465221 has 224 divisors, whose sum is σ = 46220364288000. Its totient is φ = 14796277340544.

The previous prime is 26430613465213. The next prime is 26430613465241. The reversal of 26430613465221 is 12256431603462.

26430613465221 is a `hidden beast` number, since 2 + 6 + 4 + 3 + 0 + 613 + 4 + 6 + 5 + 2 + 21 = 666.

It is not a de Polignac number, because 26430613465221 - 2³ = 26430613465213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26430613465241) by changing a digit.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 36760240900 + ... + 36760241618.

It is an arithmetic number, because the mean of its divisors is an integer number (206340912000).

Almost surely, 2^{26430613465221} is an apocalyptic number.

26430613465221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26430613465221 is a deficient number, since it is larger than the sum of its proper divisors (19789750822779).

26430613465221 is an equidigital number, since it uses as much as digits as its factorization.

26430613465221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 26430613465221 in words is "twenty-six trillion, four hundred thirty billion, six hundred thirteen million, four hundred sixty-five thousand, two hundred twenty-one".