90489451064 has 24 divisors (see below), whose sum is σ = 172494812880. Its totient is φ = 44502994080.

The previous prime is 90489451037. The next prime is 90489451093. The reversal of 90489451064 is 46015498409.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1490144 + ... + 1549679.

It is an arithmetic number, because the mean of its divisors is an integer number (7187283870).

Almost surely, 2^90489451064 is an apocalyptic number.

It is an amenable number.

90489451064 is a deficient number, since it is larger than the sum of its proper divisors (82005361816).

90489451064 is a wasteful number, since it uses less digits than its factorization.

90489451064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039951 (or 3039886 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 90489451064 in words is "ninety billion, four hundred eighty-nine million, four hundred fifty-one thousand, sixty-four".