191464817351 has 2 divisors, whose sum is σ = 191464817352. Its totient is φ = 191464817350.

The previous prime is 191464817333. The next prime is 191464817381. The reversal of 191464817351 is 153718464191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 191464817351 - 2²⁶ = 191397708487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 191464817351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191464817381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95732408675 + 95732408676.

It is an arithmetic number, because the mean of its divisors is an integer number (95732408676).

Almost surely, 2^191464817351 is an apocalyptic number.

191464817351 is a deficient number, since it is larger than the sum of its proper divisors (1).

191464817351 is an equidigital number, since it uses as much as digits as its factorization.

191464817351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 50.

The spelling of 191464817351 in words is "one hundred ninety-one billion, four hundred sixty-four million, eight hundred seventeen thousand, three hundred fifty-one".