73784991744 has 560 divisors, whose sum is σ = 242067868416. Its totient is φ = 22295347200.

The previous prime is 73784991733. The next prime is 73784991757. The reversal of 73784991744 is 44719948737.

73784991744 is a `hidden beast` number, since 7 + 3 + 78 + 499 + 1 + 74 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 349691799 + ... + 349692009.

Almost surely, 2^73784991744 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 73784991744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121033934208).

73784991744 is an abundant number, since it is smaller than the sum of its proper divisors (168282876672).

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

73784991744 is a wasteful number, since it uses less digits than its factorization.

73784991744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 264 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 63.

The spelling of 73784991744 in words is "seventy-three billion, seven hundred eighty-four million, nine hundred ninety-one thousand, seven hundred forty-four".