90481665792 has 180 divisors, whose sum is σ = 280937723080. Its totient is φ = 25851377664.

The previous prime is 90481665761. The next prime is 90481665797. The reversal of 90481665792 is 29756618409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90481665797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1819434 + ... + 1868502.

Almost surely, 2^90481665792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90481665792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140468861540).

90481665792 is an abundant number, since it is smaller than the sum of its proper divisors (190456057288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90481665792 is an frugal number, since it uses more digits than its factorization.

90481665792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49116 (or 49081 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 90481665792 in words is "ninety billion, four hundred eighty-one million, six hundred sixty-five thousand, seven hundred ninety-two".