745920123197 has 2 divisors, whose sum is σ = 745920123198. Its totient is φ = 745920123196.

The previous prime is 745920123191. The next prime is 745920123241. The reversal of 745920123197 is 791321029547.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611006425561 + 134913697636 = 781669^2 + 367306^2 .

It is a cyclic number.

It is not a de Polignac number, because 745920123197 - 2³⁶ = 677200646461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745920123191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372960061598 + 372960061599.

It is an arithmetic number, because the mean of its divisors is an integer number (372960061599).

Almost surely, 2^745920123197 is an apocalyptic number.

It is an amenable number.

745920123197 is a deficient number, since it is larger than the sum of its proper divisors (1).

745920123197 is an equidigital number, since it uses as much as digits as its factorization.

745920123197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 50.

The spelling of 745920123197 in words is "seven hundred forty-five billion, nine hundred twenty million, one hundred twenty-three thousand, one hundred ninety-seven".