970955549891 has 2 divisors, whose sum is σ = 970955549892. Its totient is φ = 970955549890.

The previous prime is 970955549873. The next prime is 970955549903. The reversal of 970955549891 is 198945559079.

970955549891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 970955549891 - 2¹⁴ = 970955533507 is a prime.

It is a super-2 number, since 2×970955549891² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (970955549191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485477774945 + 485477774946.

It is an arithmetic number, because the mean of its divisors is an integer number (485477774946).

Almost surely, 2^970955549891 is an apocalyptic number.

970955549891 is a deficient number, since it is larger than the sum of its proper divisors (1).

970955549891 is an equidigital number, since it uses as much as digits as its factorization.

970955549891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708000, while the sum is 71.

The spelling of 970955549891 in words is "nine hundred seventy billion, nine hundred fifty-five million, five hundred forty-nine thousand, eight hundred ninety-one".