13902762661 has 4 divisors (see below), whose sum is σ = 14382168300. Its totient is φ = 13423357024.

The previous prime is 13902762659. The next prime is 13902762677. The reversal of 13902762661 is 16626720931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3103604100 + 10799158561 = 55710^2 + 103919^2 .

It is a cyclic number.

It is not a de Polignac number, because 13902762661 - 2¹ = 13902762659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13902762161) 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, 239702776 + ... + 239702833.

It is an arithmetic number, because the mean of its divisors is an integer number (3595542075).

Almost surely, 2^13902762661 is an apocalyptic number.

It is an amenable number.

13902762661 is a deficient number, since it is larger than the sum of its proper divisors (479405639).

13902762661 is an equidigital number, since it uses as much as digits as its factorization.

13902762661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479405638.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 13902762661 in words is "thirteen billion, nine hundred two million, seven hundred sixty-two thousand, six hundred sixty-one".