13051643651 has 4 divisors (see below), whose sum is σ = 13117230000. Its totient is φ = 12986057304.

The previous prime is 13051643639. The next prime is 13051643701. The reversal of 13051643651 is 15634615031.

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 13051643651 - 2²² = 13047449347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13051643621) 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, 32792876 + ... + 32793273.

It is an arithmetic number, because the mean of its divisors is an integer number (3279307500).

Almost surely, 2^13051643651 is an apocalyptic number.

13051643651 is a deficient number, since it is larger than the sum of its proper divisors (65586349).

13051643651 is an equidigital number, since it uses as much as digits as its factorization.

13051643651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65586348.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 13051643651 in words is "thirteen billion, fifty-one million, six hundred forty-three thousand, six hundred fifty-one".