975640261811 has 2 divisors, whose sum is σ = 975640261812. Its totient is φ = 975640261810.

The previous prime is 975640261787. The next prime is 975640261819. The reversal of 975640261811 is 118162046579.

975640261811 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 975640261811 - 2⁶ = 975640261747 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 975640261811.

It is not a weakly prime, because it can be changed into another prime (975640261819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487820130905 + 487820130906.

It is an arithmetic number, because the mean of its divisors is an integer number (487820130906).

Almost surely, 2^975640261811 is an apocalyptic number.

975640261811 is a deficient number, since it is larger than the sum of its proper divisors (1).

975640261811 is an equidigital number, since it uses as much as digits as its factorization.

975640261811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 975640261811 in words is "nine hundred seventy-five billion, six hundred forty million, two hundred sixty-one thousand, eight hundred eleven".