90711199493 has 2 divisors, whose sum is σ = 90711199494. Its totient is φ = 90711199492.

The previous prime is 90711199457. The next prime is 90711199499. The reversal of 90711199493 is 39499111709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90711199489 + 4 = 301183^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 90711199493 - 2⁶ = 90711199429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90711199499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45355599746 + 45355599747.

It is an arithmetic number, because the mean of its divisors is an integer number (45355599747).

Almost surely, 2^90711199493 is an apocalyptic number.

It is an amenable number.

90711199493 is a deficient number, since it is larger than the sum of its proper divisors (1).

90711199493 is an equidigital number, since it uses as much as digits as its factorization.

90711199493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 551124, while the sum is 53.

The spelling of 90711199493 in words is "ninety billion, seven hundred eleven million, one hundred ninety-nine thousand, four hundred ninety-three".