791494441920 has 1120 divisors, whose sum is σ = 3522659285376. Its totient is φ = 164229120000.

The previous prime is 791494441897. The next prime is 791494441921. The reversal of 791494441920 is 29144494197.

It is a happy number.

791494441920 is a `hidden beast` number, since 7 + 9 + 1 + 4 + 9 + 444 + 192 + 0 = 666.

791494441920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (1120).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791494441921) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 143879170 + ... + 143884670.

Almost surely, 2^791494441920 is an apocalyptic number.

791494441920 is a gapful number since it is divisible by the number (70) 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 791494441920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1761329642688).

791494441920 is an abundant number, since it is smaller than the sum of its proper divisors (2731164843456).

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

791494441920 is a wasteful number, since it uses less digits than its factorization.

791494441920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5611 (or 5592 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 791494441920 in words is "seven hundred ninety-one billion, four hundred ninety-four million, four hundred forty-one thousand, nine hundred twenty".