90090974527 has 2 divisors, whose sum is σ = 90090974528. Its totient is φ = 90090974526.

The previous prime is 90090974507. The next prime is 90090974531. The reversal of 90090974527 is 72547909009.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (72547909009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90090974527 - 2¹⁹ = 90090450239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90090974507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45045487263 + 45045487264.

It is an arithmetic number, because the mean of its divisors is an integer number (45045487264).

Almost surely, 2^90090974527 is an apocalyptic number.

90090974527 is a deficient number, since it is larger than the sum of its proper divisors (1).

90090974527 is an equidigital number, since it uses as much as digits as its factorization.

90090974527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The spelling of 90090974527 in words is "ninety billion, ninety million, nine hundred seventy-four thousand, five hundred twenty-seven".