90856323527 has 2 divisors, whose sum is σ = 90856323528. Its totient is φ = 90856323526.

The previous prime is 90856323521. The next prime is 90856323539. The reversal of 90856323527 is 72532365809.

It is a weak prime.

It is an emirp because it is prime and its reverse (72532365809) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90856323527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90856323521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45428161763 + 45428161764.

It is an arithmetic number, because the mean of its divisors is an integer number (45428161764).

Almost surely, 2^90856323527 is an apocalyptic number.

90856323527 is a deficient number, since it is larger than the sum of its proper divisors (1).

90856323527 is an equidigital number, since it uses as much as digits as its factorization.

90856323527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 90856323527 in words is "ninety billion, eight hundred fifty-six million, three hundred twenty-three thousand, five hundred twenty-seven".