791803541021 has 4 divisors (see below), whose sum is σ = 791807041344. Its totient is φ = 791800040700.

The previous prime is 791803540961. The next prime is 791803541029. The reversal of 791803541021 is 120145308197.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791803541021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 791803541021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791803541029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385525 + ... + 1871706.

It is an arithmetic number, because the mean of its divisors is an integer number (197951760336).

Almost surely, 2^791803541021 is an apocalyptic number.

It is an amenable number.

791803541021 is a deficient number, since it is larger than the sum of its proper divisors (3500323).

791803541021 is a wasteful number, since it uses less digits than its factorization.

791803541021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500322.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 791803541021 in words is "seven hundred ninety-one billion, eight hundred three million, five hundred forty-one thousand, twenty-one".