791642578550448 has 160 divisors (see below), whose sum is σ = 2061802846886400. Its totient is φ = 261730691278848.

The previous prime is 791642578550437. The next prime is 791642578550449. The reversal of 791642578550448 is 844055875246197.

It is a self number, because there is not a number n which added to its sum of digits gives 791642578550448.

It is not an unprimeable number, because it can be changed into a prime (791642578550449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10456348818 + ... + 10456424526.

It is an arithmetic number, because the mean of its divisors is an integer number (12886267793040).

Almost surely, 2^{791642578550448} is an apocalyptic number.

It is an amenable number.

791642578550448 is an abundant number, since it is smaller than the sum of its proper divisors (1270160268335952).

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

791642578550448 is a wasteful number, since it uses less digits than its factorization.

791642578550448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79019 (or 79013 counting only the distinct ones).

The product of its (nonzero) digits is 2709504000, while the sum is 75.

The spelling of 791642578550448 in words is "seven hundred ninety-one trillion, six hundred forty-two billion, five hundred seventy-eight million, five hundred fifty thousand, four hundred forty-eight".