90409000766 has 16 divisors (see below), whose sum is σ = 156408758880. Its totient is φ = 38391239520.

The previous prime is 90409000763. The next prime is 90409000777. The reversal of 90409000766 is 66700090409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90409000763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29621345 + ... + 29624396.

It is an arithmetic number, because the mean of its divisors is an integer number (9775547430).

Almost surely, 2^90409000766 is an apocalyptic number.

90409000766 is a deficient number, since it is larger than the sum of its proper divisors (65999758114).

90409000766 is a wasteful number, since it uses less digits than its factorization.

90409000766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59245859.

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 90409000766 in words is "ninety billion, four hundred nine million, seven hundred sixty-six", and thus it is an aban number.