475194110921 has 2 divisors, whose sum is σ = 475194110922. Its totient is φ = 475194110920.

The previous prime is 475194110861. The next prime is 475194110927. The reversal of 475194110921 is 129011491574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423200990521 + 51993120400 = 650539^2 + 228020^2 .

It is a cyclic number.

It is not a de Polignac number, because 475194110921 - 2³⁸ = 200316203977 is a prime.

It is not a weakly prime, because it can be changed into another prime (475194110927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237597055460 + 237597055461.

It is an arithmetic number, because the mean of its divisors is an integer number (237597055461).

Almost surely, 2^475194110921 is an apocalyptic number.

It is an amenable number.

475194110921 is a deficient number, since it is larger than the sum of its proper divisors (1).

475194110921 is an equidigital number, since it uses as much as digits as its factorization.

475194110921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 44.

The spelling of 475194110921 in words is "four hundred seventy-five billion, one hundred ninety-four million, one hundred ten thousand, nine hundred twenty-one".