475198079861 has 2 divisors, whose sum is σ = 475198079862. Its totient is φ = 475198079860.

The previous prime is 475198079857. The next prime is 475198079933. The reversal of 475198079861 is 168970891574.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471179280625 + 4018799236 = 686425^2 + 63394^2 .

It is a cyclic number.

It is not a de Polignac number, because 475198079861 - 2² = 475198079857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475198079261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237599039930 + 237599039931.

It is an arithmetic number, because the mean of its divisors is an integer number (237599039931).

Almost surely, 2^475198079861 is an apocalyptic number.

It is an amenable number.

475198079861 is a deficient number, since it is larger than the sum of its proper divisors (1).

475198079861 is an equidigital number, since it uses as much as digits as its factorization.

475198079861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 65.

The spelling of 475198079861 in words is "four hundred seventy-five billion, one hundred ninety-eight million, seventy-nine thousand, eight hundred sixty-one".