912668801591 has 2 divisors, whose sum is σ = 912668801592. Its totient is φ = 912668801590.

The previous prime is 912668801587. The next prime is 912668801621. The reversal of 912668801591 is 195108866219.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 912668801591 - 2² = 912668801587 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (912668801791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456334400795 + 456334400796.

It is an arithmetic number, because the mean of its divisors is an integer number (456334400796).

Almost surely, 2^912668801591 is an apocalyptic number.

912668801591 is a deficient number, since it is larger than the sum of its proper divisors (1).

912668801591 is an equidigital number, since it uses as much as digits as its factorization.

912668801591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 56.

The spelling of 912668801591 in words is "nine hundred twelve billion, six hundred sixty-eight million, eight hundred one thousand, five hundred ninety-one".