13051668481 has 4 divisors (see below), whose sum is σ = 13619132352. Its totient is φ = 12484204612.

The previous prime is 13051668449. The next prime is 13051668493. The reversal of 13051668481 is 18486615031.

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.

It is a cyclic number.

It is not a de Polignac number, because 13051668481 - 2⁵ = 13051668449 is a prime.

It is a super-2 number, since 2×13051668481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13051648481) 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, 283731901 + ... + 283731946.

It is an arithmetic number, because the mean of its divisors is an integer number (3404783088).

Almost surely, 2^13051668481 is an apocalyptic number.

It is an amenable number.

13051668481 is a deficient number, since it is larger than the sum of its proper divisors (567463871).

13051668481 is an equidigital number, since it uses as much as digits as its factorization.

13051668481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567463870.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 13051668481 in words is "thirteen billion, fifty-one million, six hundred sixty-eight thousand, four hundred eighty-one".