191461356679 has 2 divisors, whose sum is σ = 191461356680. Its totient is φ = 191461356678.

The previous prime is 191461356677. The next prime is 191461356701. The reversal of 191461356679 is 976653164191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 191461356679 - 2¹ = 191461356677 is a prime.

It is a super-3 number, since 3×191461356679³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 191461356677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191461356677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95730678339 + 95730678340.

It is an arithmetic number, because the mean of its divisors is an integer number (95730678340).

Almost surely, 2^191461356679 is an apocalyptic number.

191461356679 is a deficient number, since it is larger than the sum of its proper divisors (1).

191461356679 is an equidigital number, since it uses as much as digits as its factorization.

191461356679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 58.

The spelling of 191461356679 in words is "one hundred ninety-one billion, four hundred sixty-one million, three hundred fifty-six thousand, six hundred seventy-nine".