90232233977 has 2 divisors, whose sum is σ = 90232233978. Its totient is φ = 90232233976.

The previous prime is 90232233953. The next prime is 90232233989. The reversal of 90232233977 is 77933223209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69301089001 + 20931144976 = 263251^2 + 144676^2 .

It is a cyclic number.

It is not a de Polignac number, because 90232233977 - 2¹² = 90232229881 is a prime.

It is not a weakly prime, because it can be changed into another prime (90232233997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45116116988 + 45116116989.

It is an arithmetic number, because the mean of its divisors is an integer number (45116116989).

Almost surely, 2^90232233977 is an apocalyptic number.

It is an amenable number.

90232233977 is a deficient number, since it is larger than the sum of its proper divisors (1).

90232233977 is an equidigital number, since it uses as much as digits as its factorization.

90232233977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 47.

The spelling of 90232233977 in words is "ninety billion, two hundred thirty-two million, two hundred thirty-three thousand, nine hundred seventy-seven".