191467650551 has 2 divisors, whose sum is σ = 191467650552. Its totient is φ = 191467650550.

The previous prime is 191467650527. The next prime is 191467650571. The reversal of 191467650551 is 155056764191.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191467650551 is a prime.

It is a super-2 number, since 2×191467650551² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 191467650551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191467650571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95733825275 + 95733825276.

It is an arithmetic number, because the mean of its divisors is an integer number (95733825276).

Almost surely, 2^191467650551 is an apocalyptic number.

191467650551 is a deficient number, since it is larger than the sum of its proper divisors (1).

191467650551 is an equidigital number, since it uses as much as digits as its factorization.

191467650551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134000, while the sum is 50.

The spelling of 191467650551 in words is "one hundred ninety-one billion, four hundred sixty-seven million, six hundred fifty thousand, five hundred fifty-one".