90688973983 has 2 divisors, whose sum is σ = 90688973984. Its totient is φ = 90688973982.

The previous prime is 90688973909. The next prime is 90688974053. The reversal of 90688973983 is 38937988609.

It is an a-pointer prime, because the next prime (90688974053) can be obtained adding 90688973983 to its sum of digits (70).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90688973983 - 2¹³ = 90688965791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90688973083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45344486991 + 45344486992.

It is an arithmetic number, because the mean of its divisors is an integer number (45344486992).

Almost surely, 2^90688973983 is an apocalyptic number.

90688973983 is a deficient number, since it is larger than the sum of its proper divisors (1).

90688973983 is an equidigital number, since it uses as much as digits as its factorization.

90688973983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141087744, while the sum is 70.

The spelling of 90688973983 in words is "ninety billion, six hundred eighty-eight million, nine hundred seventy-three thousand, nine hundred eighty-three".