474161696821 has 2 divisors, whose sum is σ = 474161696822. Its totient is φ = 474161696820.

The previous prime is 474161696797. The next prime is 474161696863. The reversal of 474161696821 is 128696161474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412563420721 + 61598276100 = 642311^2 + 248190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-474161696821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (474161696621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237080848410 + 237080848411.

It is an arithmetic number, because the mean of its divisors is an integer number (237080848411).

Almost surely, 2^474161696821 is an apocalyptic number.

It is an amenable number.

474161696821 is a deficient number, since it is larger than the sum of its proper divisors (1).

474161696821 is an equidigital number, since it uses as much as digits as its factorization.

474161696821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 55.

The spelling of 474161696821 in words is "four hundred seventy-four billion, one hundred sixty-one million, six hundred ninety-six thousand, eight hundred twenty-one".