90045524709 has 24 divisors (see below), whose sum is σ = 148918386240. Its totient is φ = 51360499008.

The previous prime is 90045524687. The next prime is 90045524713. The reversal of 90045524709 is 90742554009.

90045524709 is a `hidden beast` number, since 90 + 0 + 4 + 552 + 4 + 7 + 0 + 9 = 666.

It is not a de Polignac number, because 90045524709 - 2¹⁵ = 90045491941 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90045524719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1272024 + ... + 1340945.

It is an arithmetic number, because the mean of its divisors is an integer number (6204932760).

Almost surely, 2^90045524709 is an apocalyptic number.

It is an amenable number.

90045524709 is a deficient number, since it is larger than the sum of its proper divisors (58872861531).

90045524709 is a wasteful number, since it uses less digits than its factorization.

90045524709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613529 (or 2613526 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 90045524709 in words is "ninety billion, forty-five million, five hundred twenty-four thousand, seven hundred nine".