13040566457 has 4 divisors (see below), whose sum is σ = 13726912080. Its totient is φ = 12354220836.

The previous prime is 13040566453. The next prime is 13040566463. The reversal of 13040566457 is 75466504031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75466504031 = 5477 ⋅13778803.

It is a cyclic number.

It is not a de Polignac number, because 13040566457 - 2² = 13040566453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13040566453) 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, 343172783 + ... + 343172820.

It is an arithmetic number, because the mean of its divisors is an integer number (3431728020).

Almost surely, 2^13040566457 is an apocalyptic number.

It is an amenable number.

13040566457 is a deficient number, since it is larger than the sum of its proper divisors (686345623).

13040566457 is an equidigital number, since it uses as much as digits as its factorization.

13040566457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686345622.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 13040566457 in words is "thirteen billion, forty million, five hundred sixty-six thousand, four hundred fifty-seven".