393211047161 has 2 divisors, whose sum is σ = 393211047162. Its totient is φ = 393211047160.

The previous prime is 393211047083. The next prime is 393211047167. The reversal of 393211047161 is 161740112393.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392808041536 + 403005625 = 626744^2 + 20075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-393211047161 is a prime.

It is a super-2 number, since 2×393211047161² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (393211047167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196605523580 + 196605523581.

It is an arithmetic number, because the mean of its divisors is an integer number (196605523581).

Almost surely, 2^393211047161 is an apocalyptic number.

It is an amenable number.

393211047161 is a deficient number, since it is larger than the sum of its proper divisors (1).

393211047161 is an equidigital number, since it uses as much as digits as its factorization.

393211047161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 393211047161 in words is "three hundred ninety-three billion, two hundred eleven million, forty-seven thousand, one hundred sixty-one".