90493765785 has 80 divisors (see below), whose sum is σ = 168075528192. Its totient is φ = 46532361600.

The previous prime is 90493765729. The next prime is 90493765889. The reversal of 90493765785 is 58756739409.

90493765785 is a `hidden beast` number, since 9 + 0 + 493 + 7 + 65 + 7 + 85 = 666.

It is not a de Polignac number, because 90493765785 - 2⁹ = 90493765273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3389107 + ... + 3415703.

Almost surely, 2^90493765785 is an apocalyptic number.

It is an amenable number.

90493765785 is a deficient number, since it is larger than the sum of its proper divisors (77581762407).

90493765785 is a wasteful number, since it uses less digits than its factorization.

90493765785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26916 (or 26907 counting only the distinct ones).

The product of its (nonzero) digits is 57153600, while the sum is 63.

The spelling of 90493765785 in words is "ninety billion, four hundred ninety-three million, seven hundred sixty-five thousand, seven hundred eighty-five".