90745838923 has 2 divisors, whose sum is σ = 90745838924. Its totient is φ = 90745838922.

The previous prime is 90745838741. The next prime is 90745838929. The reversal of 90745838923 is 32983854709.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90745838923 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (90745838929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45372919461 + 45372919462.

It is an arithmetic number, because the mean of its divisors is an integer number (45372919462).

Almost surely, 2^90745838923 is an apocalyptic number.

90745838923 is a deficient number, since it is larger than the sum of its proper divisors (1).

90745838923 is an equidigital number, since it uses as much as digits as its factorization.

90745838923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 90745838923 in words is "ninety billion, seven hundred forty-five million, eight hundred thirty-eight thousand, nine hundred twenty-three".