90434565527 has 2 divisors, whose sum is σ = 90434565528. Its totient is φ = 90434565526.

The previous prime is 90434565509. The next prime is 90434565583. The reversal of 90434565527 is 72556543409.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90434565527 - 2²² = 90430371223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90434565127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45217282763 + 45217282764.

It is an arithmetic number, because the mean of its divisors is an integer number (45217282764).

Almost surely, 2^90434565527 is an apocalyptic number.

90434565527 is a deficient number, since it is larger than the sum of its proper divisors (1).

90434565527 is an equidigital number, since it uses as much as digits as its factorization.

90434565527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 50.

The spelling of 90434565527 in words is "ninety billion, four hundred thirty-four million, five hundred sixty-five thousand, five hundred twenty-seven".