15643364654 has 12 divisors (see below), whose sum is σ = 24023442096. Its totient is φ = 7639780932.

The previous prime is 15643364651. The next prime is 15643364669. The reversal of 15643364654 is 45646334651.

It is a junction number, because it is equal to n+sod(n) for n = 15643364599 and 15643364608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15643364651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2111414 + ... + 2118809.

It is an arithmetic number, because the mean of its divisors is an integer number (2001953508).

Almost surely, 2^15643364654 is an apocalyptic number.

15643364654 is a deficient number, since it is larger than the sum of its proper divisors (8380077442).

15643364654 is an equidigital number, since it uses as much as digits as its factorization.

15643364654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4230311 (or 4230268 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 47.

The spelling of 15643364654 in words is "fifteen billion, six hundred forty-three million, three hundred sixty-four thousand, six hundred fifty-four".