90816572783 has 2 divisors, whose sum is σ = 90816572784. Its totient is φ = 90816572782.

The previous prime is 90816572767. The next prime is 90816572827. The reversal of 90816572783 is 38727561809.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90816572783 - 2⁴ = 90816572767 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90816572183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45408286391 + 45408286392.

It is an arithmetic number, because the mean of its divisors is an integer number (45408286392).

Almost surely, 2^90816572783 is an apocalyptic number.

90816572783 is a deficient number, since it is larger than the sum of its proper divisors (1).

90816572783 is an equidigital number, since it uses as much as digits as its factorization.

90816572783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 90816572783 in words is "ninety billion, eight hundred sixteen million, five hundred seventy-two thousand, seven hundred eighty-three".