745040423163991 has 2 divisors, whose sum is σ = 745040423163992. Its totient is φ = 745040423163990.

The previous prime is 745040423163977. The next prime is 745040423164087. The reversal of 745040423163991 is 199361324040547.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 745040423163991 - 2³³ = 745031833229399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745040423163941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372520211581995 + 372520211581996.

It is an arithmetic number, because the mean of its divisors is an integer number (372520211581996).

Almost surely, 2^{745040423163991} is an apocalyptic number.

745040423163991 is a deficient number, since it is larger than the sum of its proper divisors (1).

745040423163991 is an equidigital number, since it uses as much as digits as its factorization.

745040423163991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19595520, while the sum is 58.

The spelling of 745040423163991 in words is "seven hundred forty-five trillion, forty billion, four hundred twenty-three million, one hundred sixty-three thousand, nine hundred ninety-one".