90111011077 has 2 divisors, whose sum is σ = 90111011078. Its totient is φ = 90111011076.

The previous prime is 90111011063. The next prime is 90111011083. The reversal of 90111011077 is 77011011109.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70037505316 + 20073505761 = 264646^2 + 141681^2 .

It is a cyclic number.

It is not a de Polignac number, because 90111011077 - 2⁷ = 90111010949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90111011677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45055505538 + 45055505539.

It is an arithmetic number, because the mean of its divisors is an integer number (45055505539).

Almost surely, 2^90111011077 is an apocalyptic number.

It is an amenable number.

90111011077 is a deficient number, since it is larger than the sum of its proper divisors (1).

90111011077 is an equidigital number, since it uses as much as digits as its factorization.

90111011077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 441, while the sum is 28.

The spelling of 90111011077 in words is "ninety billion, one hundred eleven million, eleven thousand, seventy-seven".