951217387213 has 2 divisors, whose sum is σ = 951217387214. Its totient is φ = 951217387212.

The previous prime is 951217387177. The next prime is 951217387243. The reversal of 951217387213 is 312783712159.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 944447717929 + 6769669284 = 971827^2 + 82278^2 .

It is a cyclic number.

It is not a de Polignac number, because 951217387213 - 2⁹ = 951217386701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (951217387243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 475608693606 + 475608693607.

It is an arithmetic number, because the mean of its divisors is an integer number (475608693607).

Almost surely, 2^951217387213 is an apocalyptic number.

It is an amenable number.

951217387213 is a deficient number, since it is larger than the sum of its proper divisors (1).

951217387213 is an equidigital number, since it uses as much as digits as its factorization.

951217387213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 49.

The spelling of 951217387213 in words is "nine hundred fifty-one billion, two hundred seventeen million, three hundred eighty-seven thousand, two hundred thirteen".