13135642451 has 4 divisors (see below), whose sum is σ = 13441122552. Its totient is φ = 12830162352.

The previous prime is 13135642441. The next prime is 13135642489. The reversal of 13135642451 is 15424653131.

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 13135642451 - 2²⁶ = 13068533587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13135642441) 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, 152739986 + ... + 152740071.

It is an arithmetic number, because the mean of its divisors is an integer number (3360280638).

Almost surely, 2^13135642451 is an apocalyptic number.

13135642451 is a deficient number, since it is larger than the sum of its proper divisors (305480101).

13135642451 is an equidigital number, since it uses as much as digits as its factorization.

13135642451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305480100.

The product of its digits is 43200, while the sum is 35.

The spelling of 13135642451 in words is "thirteen billion, one hundred thirty-five million, six hundred forty-two thousand, four hundred fifty-one".