191582337061 has 2 divisors, whose sum is σ = 191582337062. Its totient is φ = 191582337060.

The previous prime is 191582337019. The next prime is 191582337071. The reversal of 191582337061 is 160733285191.

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., 140404586436 + 51177750625 = 374706^2 + 226225^2 .

It is a cyclic number.

It is not a de Polignac number, because 191582337061 - 2³³ = 182992402469 is a prime.

It is a super-2 number, since 2×191582337061² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191582337071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95791168530 + 95791168531.

It is an arithmetic number, because the mean of its divisors is an integer number (95791168531).

Almost surely, 2^191582337061 is an apocalyptic number.

It is an amenable number.

191582337061 is a deficient number, since it is larger than the sum of its proper divisors (1).

191582337061 is an equidigital number, since it uses as much as digits as its factorization.

191582337061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 191582337061 in words is "one hundred ninety-one billion, five hundred eighty-two million, three hundred thirty-seven thousand, sixty-one".