90540374400 has 960 divisors, whose sum is σ = 385662816000. Its totient is φ = 20488826880.

The previous prime is 90540374389. The next prime is 90540374417. The reversal of 90540374400 is 447304509.

90540374400 is a `hidden beast` number, since 9 + 0 + 540 + 3 + 74 + 40 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 252201421 + ... + 252201779.

It is an arithmetic number, because the mean of its divisors is an integer number (401732100).

Almost surely, 2^90540374400 is an apocalyptic number.

90540374400 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 90540374400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192831408000).

90540374400 is an abundant number, since it is smaller than the sum of its proper divisors (295122441600).

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

90540374400 is a wasteful number, since it uses less digits than its factorization.

90540374400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Adding to 90540374400 its reverse (447304509), we get a palindrome (90987678909).

The spelling of 90540374400 in words is "ninety billion, five hundred forty million, three hundred seventy-four thousand, four hundred".