13293221951 has 2 divisors, whose sum is σ = 13293221952. Its totient is φ = 13293221950.

The previous prime is 13293221917. The next prime is 13293221989. The reversal of 13293221951 is 15912239231.

It is an a-pointer prime, because the next prime (13293221989) can be obtained adding 13293221951 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13293221951 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13293221911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6646610975 + 6646610976.

It is an arithmetic number, because the mean of its divisors is an integer number (6646610976).

Almost surely, 2^13293221951 is an apocalyptic number.

13293221951 is a deficient number, since it is larger than the sum of its proper divisors (1).

13293221951 is an equidigital number, since it uses as much as digits as its factorization.

13293221951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 38.

The spelling of 13293221951 in words is "thirteen billion, two hundred ninety-three million, two hundred twenty-one thousand, nine hundred fifty-one".