912561994080 has 576 divisors, whose sum is σ = 3581510639616. Its totient is φ = 209530368000.

The previous prime is 912561994079. The next prime is 912561994093. The reversal of 912561994080 is 80499165219.

912561994080 is a `hidden beast` number, since 9 + 12 + 5 + 619 + 9 + 4 + 0 + 8 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23059110 + ... + 23098650.

It is an arithmetic number, because the mean of its divisors is an integer number (6217900416).

Almost surely, 2^912561994080 is an apocalyptic number.

912561994080 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 912561994080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1790755319808).

912561994080 is an abundant number, since it is smaller than the sum of its proper divisors (2668948645536).

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

912561994080 is a wasteful number, since it uses less digits than its factorization.

912561994080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39651 (or 39640 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The spelling of 912561994080 in words is "nine hundred twelve billion, five hundred sixty-one million, nine hundred ninety-four thousand, eighty".