15643234651 has 12 divisors (see below), whose sum is σ = 17942225616. Its totient is φ = 13602810320.

The previous prime is 15643234643. The next prime is 15643234657.

15643234651 is nontrivially palindromic in base 10.

15643234651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15643234651 - 2³ = 15643234643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15643234657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2807716 + ... + 2813281.

It is an arithmetic number, because the mean of its divisors is an integer number (1495185468).

Almost surely, 2^15643234651 is an apocalyptic number.

15643234651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15643234651 is a deficient number, since it is larger than the sum of its proper divisors (2298990965).

15643234651 is a wasteful number, since it uses less digits than its factorization.

15643234651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5621042 (or 5621031 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The spelling of 15643234651 in words is "fifteen billion, six hundred forty-three million, two hundred thirty-four thousand, six hundred fifty-one".