90549454464 has 192 divisors, whose sum is σ = 307396078080. Its totient is φ = 25036646400.

The previous prime is 90549454417. The next prime is 90549454487. The reversal of 90549454464 is 46445494509.

90549454464 is a `hidden beast` number, since 9 + 0 + 5 + 4 + 94 + 544 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a self number, because there is not a number n which added to its sum of digits gives 90549454464.

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 23 ways as a sum of consecutive naturals, for example, 68874 + ... + 431094.

It is an arithmetic number, because the mean of its divisors is an integer number (1601021240).

Almost surely, 2^90549454464 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 90549454464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153698039040).

90549454464 is an abundant number, since it is smaller than the sum of its proper divisors (216846623616).

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

90549454464 is a wasteful number, since it uses less digits than its factorization.

90549454464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362279 (or 362264 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 90549454464 in words is "ninety billion, five hundred forty-nine million, four hundred fifty-four thousand, four hundred sixty-four".