873774991944 has 384 divisors, whose sum is σ = 2526189120000. Its totient is φ = 272437401600.

The previous prime is 873774991937. The next prime is 873774991961. The reversal of 873774991944 is 449199477378.

873774991944 is a `hidden beast` number, since 87 + 3 + 7 + 7 + 499 + 19 + 44 = 666.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (72).

Its product of digits (384072192) is a multiple of the sum of its prime divisors (686).

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, 2982167062 + ... + 2982167354.

It is an arithmetic number, because the mean of its divisors is an integer number (6578617500).

Almost surely, 2^873774991944 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 873774991944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263094560000).

873774991944 is an abundant number, since it is smaller than the sum of its proper divisors (1652414128056).

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

873774991944 is a wasteful number, since it uses less digits than its factorization.

873774991944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 686 counting only the distinct ones).

The product of its digits is 384072192, while the sum is 72.

The spelling of 873774991944 in words is "eight hundred seventy-three billion, seven hundred seventy-four million, nine hundred ninety-one thousand, nine hundred forty-four".