90780585683 has 2 divisors, whose sum is σ = 90780585684. Its totient is φ = 90780585682.

The previous prime is 90780585677. The next prime is 90780585713. The reversal of 90780585683 is 38658508709.

It is a weak prime.

It is an emirp because it is prime and its reverse (38658508709) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90780585683 - 2²² = 90776391379 is a prime.

It is a super-2 number, since 2×90780585683² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90780585613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45390292841 + 45390292842.

It is an arithmetic number, because the mean of its divisors is an integer number (45390292842).

Almost surely, 2^90780585683 is an apocalyptic number.

90780585683 is a deficient number, since it is larger than the sum of its proper divisors (1).

90780585683 is an equidigital number, since it uses as much as digits as its factorization.

90780585683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14515200, while the sum is 59.

The spelling of 90780585683 in words is "ninety billion, seven hundred eighty million, five hundred eighty-five thousand, six hundred eighty-three".