13054402535621 has 4 divisors (see below), whose sum is σ = 13054430712972. Its totient is φ = 13054374358272.

The previous prime is 13054402535591. The next prime is 13054402535623. The reversal of 13054402535621 is 12653520445031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4567004073025 + 8487398462596 = 2137055^2 + 2913314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13054402535621 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 (13054402535623) 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, 13381916 + ... + 14324261.

It is an arithmetic number, because the mean of its divisors is an integer number (3263607678243).

Almost surely, 2^{13054402535621} is an apocalyptic number.

It is an amenable number.

13054402535621 is a deficient number, since it is larger than the sum of its proper divisors (28177351).

13054402535621 is an equidigital number, since it uses as much as digits as its factorization.

13054402535621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28177350.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 13054402535621 in words is "thirteen trillion, fifty-four billion, four hundred two million, five hundred thirty-five thousand, six hundred twenty-one".