90432936677 has 2 divisors, whose sum is σ = 90432936678. Its totient is φ = 90432936676.

The previous prime is 90432936661. The next prime is 90432936733. The reversal of 90432936677 is 77663923409.

It is an a-pointer prime, because the next prime (90432936733) can be obtained adding 90432936677 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90413874721 + 19061956 = 300689^2 + 4366^2 .

It is a cyclic number.

It is not a de Polignac number, because 90432936677 - 2⁴ = 90432936661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90432936637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45216468338 + 45216468339.

It is an arithmetic number, because the mean of its divisors is an integer number (45216468339).

Almost surely, 2^90432936677 is an apocalyptic number.

It is an amenable number.

90432936677 is a deficient number, since it is larger than the sum of its proper divisors (1).

90432936677 is an equidigital number, since it uses as much as digits as its factorization.

90432936677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10287648, while the sum is 56.

The spelling of 90432936677 in words is "ninety billion, four hundred thirty-two million, nine hundred thirty-six thousand, six hundred seventy-seven".