975972918857 has 2 divisors, whose sum is σ = 975972918858. Its totient is φ = 975972918856.

The previous prime is 975972918839. The next prime is 975972918911. The reversal of 975972918857 is 758819279579.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 972627915961 + 3345002896 = 986219^2 + 57836^2 .

It is an emirp because it is prime and its reverse (758819279579) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 975972918857 - 2¹⁶ = 975972853321 is a prime.

It is not a weakly prime, because it can be changed into another prime (975972918827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487986459428 + 487986459429.

It is an arithmetic number, because the mean of its divisors is an integer number (487986459429).

Almost surely, 2^975972918857 is an apocalyptic number.

It is an amenable number.

975972918857 is a deficient number, since it is larger than the sum of its proper divisors (1).

975972918857 is an equidigital number, since it uses as much as digits as its factorization.

975972918857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800150400, while the sum is 77.

The spelling of 975972918857 in words is "nine hundred seventy-five billion, nine hundred seventy-two million, nine hundred eighteen thousand, eight hundred fifty-seven".