90752217859 has 2 divisors, whose sum is σ = 90752217860. Its totient is φ = 90752217858.

The previous prime is 90752217847. The next prime is 90752217887. The reversal of 90752217859 is 95871225709.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90752217859 - 2²¹ = 90750120707 is a prime.

It is not a weakly prime, because it can be changed into another prime (90752287859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45376108929 + 45376108930.

It is an arithmetic number, because the mean of its divisors is an integer number (45376108930).

Almost surely, 2^90752217859 is an apocalyptic number.

90752217859 is a deficient number, since it is larger than the sum of its proper divisors (1).

90752217859 is an equidigital number, since it uses as much as digits as its factorization.

90752217859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 90752217859 in words is "ninety billion, seven hundred fifty-two million, two hundred seventeen thousand, eight hundred fifty-nine".