90819338400 has 720 divisors, whose sum is σ = 380263536576. Its totient is φ = 20663009280.

The previous prime is 90819338359. The next prime is 90819338411. The reversal of 90819338400 is 483391809.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 119 ways as a sum of consecutive naturals, for example, 157398912 + ... + 157399488.

Almost surely, 2^90819338400 is an apocalyptic number.

90819338400 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90819338400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190131768288).

90819338400 is an abundant number, since it is smaller than the sum of its proper divisors (289444198176).

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

90819338400 is a wasteful number, since it uses less digits than its factorization.

90819338400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 90819338400 in words is "ninety billion, eight hundred nineteen million, three hundred thirty-eight thousand, four hundred".