13420690487 has 2 divisors, whose sum is σ = 13420690488. Its totient is φ = 13420690486.

The previous prime is 13420690457. The next prime is 13420690559. The reversal of 13420690487 is 78409602431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13420690487 - 2²⁶ = 13353581623 is a prime.

It is a super-2 number, since 2×13420690487² (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 (13420690447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6710345243 + 6710345244.

It is an arithmetic number, because the mean of its divisors is an integer number (6710345244).

Almost surely, 2^13420690487 is an apocalyptic number.

13420690487 is a deficient number, since it is larger than the sum of its proper divisors (1).

13420690487 is an equidigital number, since it uses as much as digits as its factorization.

13420690487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 13420690487 in words is "thirteen billion, four hundred twenty million, six hundred ninety thousand, four hundred eighty-seven".