745798197197 has 2 divisors, whose sum is σ = 745798197198. Its totient is φ = 745798197196.

The previous prime is 745798197187. The next prime is 745798197233. The reversal of 745798197197 is 791791897547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 587562108676 + 158236088521 = 766526^2 + 397789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745798197197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745798197187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372899098598 + 372899098599.

It is an arithmetic number, because the mean of its divisors is an integer number (372899098599).

Almost surely, 2^745798197197 is an apocalyptic number.

It is an amenable number.

745798197197 is a deficient number, since it is larger than the sum of its proper divisors (1).

745798197197 is an equidigital number, since it uses as much as digits as its factorization.

745798197197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 280052640, while the sum is 74.

The spelling of 745798197197 in words is "seven hundred forty-five billion, seven hundred ninety-eight million, one hundred ninety-seven thousand, one hundred ninety-seven".