13532640643 has 2 divisors, whose sum is σ = 13532640644. Its totient is φ = 13532640642.

The previous prime is 13532640631. The next prime is 13532640659. The reversal of 13532640643 is 34604623531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13532640643 is a prime.

It is not a weakly prime, because it can be changed into another prime (13532640743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6766320321 + 6766320322.

It is an arithmetic number, because the mean of its divisors is an integer number (6766320322).

Almost surely, 2^13532640643 is an apocalyptic number.

13532640643 is a deficient number, since it is larger than the sum of its proper divisors (1).

13532640643 is an equidigital number, since it uses as much as digits as its factorization.

13532640643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 13532640643 in words is "thirteen billion, five hundred thirty-two million, six hundred forty thousand, six hundred forty-three".