10194271961 has 2 divisors, whose sum is σ = 10194271962. Its totient is φ = 10194271960.

The previous prime is 10194271957. The next prime is 10194272029. The reversal of 10194271961 is 16917249101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7200540736 + 2993731225 = 84856^2 + 54715^2 .

It is a cyclic number.

It is not a de Polignac number, because 10194271961 - 2² = 10194271957 is a prime.

It is not a weakly prime, because it can be changed into another prime (10194271921) 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, 5097135980 + 5097135981.

It is an arithmetic number, because the mean of its divisors is an integer number (5097135981).

Almost surely, 2^10194271961 is an apocalyptic number.

It is an amenable number.

10194271961 is a deficient number, since it is larger than the sum of its proper divisors (1).

10194271961 is an equidigital number, since it uses as much as digits as its factorization.

10194271961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 41.

The spelling of 10194271961 in words is "ten billion, one hundred ninety-four million, two hundred seventy-one thousand, nine hundred sixty-one".