951315968881 has 2 divisors, whose sum is σ = 951315968882. Its totient is φ = 951315968880.

The previous prime is 951315968809. The next prime is 951315968887. The reversal of 951315968881 is 188869513159.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 913331907856 + 37984061025 = 955684^2 + 194895^2 .

It is a cyclic number.

It is not a de Polignac number, because 951315968881 - 2³¹ = 949168485233 is a prime.

It is a super-2 number, since 2×951315968881² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (951315968887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 475657984440 + 475657984441.

It is an arithmetic number, because the mean of its divisors is an integer number (475657984441).

Almost surely, 2^951315968881 is an apocalyptic number.

It is an amenable number.

951315968881 is a deficient number, since it is larger than the sum of its proper divisors (1).

951315968881 is an equidigital number, since it uses as much as digits as its factorization.

951315968881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18662400, while the sum is 64.

The spelling of 951315968881 in words is "nine hundred fifty-one billion, three hundred fifteen million, nine hundred sixty-eight thousand, eight hundred eighty-one".