13920712669 has 2 divisors, whose sum is σ = 13920712670. Its totient is φ = 13920712668.

The previous prime is 13920712651. The next prime is 13920712681. The reversal of 13920712669 is 96621702931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13907484900 + 13227769 = 117930^2 + 3637^2 .

It is a cyclic number.

It is not a de Polignac number, because 13920712669 - 2¹⁵ = 13920679901 is a prime.

It is a super-2 number, since 2×13920712669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13920712639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6960356334 + 6960356335.

It is an arithmetic number, because the mean of its divisors is an integer number (6960356335).

Almost surely, 2^13920712669 is an apocalyptic number.

It is an amenable number.

13920712669 is a deficient number, since it is larger than the sum of its proper divisors (1).

13920712669 is an equidigital number, since it uses as much as digits as its factorization.

13920712669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 13920712669 in words is "thirteen billion, nine hundred twenty million, seven hundred twelve thousand, six hundred sixty-nine".