90789649922 has 16 divisors (see below), whose sum is σ = 136551889152. Its totient is φ = 45272508240.

The previous prime is 90789649921. The next prime is 90789649927. The reversal of 90789649922 is 22994698709.

It is not an unprimeable number, because it can be changed into a prime (90789649921) 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, 1160783 + ... + 1236525.

It is an arithmetic number, because the mean of its divisors is an integer number (8534493072).

Almost surely, 2^90789649922 is an apocalyptic number.

90789649922 is a deficient number, since it is larger than the sum of its proper divisors (45762239230).

90789649922 is a wasteful number, since it uses less digits than its factorization.

90789649922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77353.

The product of its (nonzero) digits is 35271936, while the sum is 65.

The spelling of 90789649922 in words is "ninety billion, seven hundred eighty-nine million, six hundred forty-nine thousand, nine hundred twenty-two".