791321783763 has 16 divisors (see below), whose sum is σ = 1207391736320. Its totient is φ = 451595851776.

The previous prime is 791321783741. The next prime is 791321783797. The reversal of 791321783763 is 367387123197.

It is not a de Polignac number, because 791321783763 - 2²² = 791317589459 is a prime.

It is a super-2 number, since 2×791321783763² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (791321783663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24484495 + ... + 24516792.

It is an arithmetic number, because the mean of its divisors is an integer number (75461983520).

Almost surely, 2^791321783763 is an apocalyptic number.

791321783763 is a deficient number, since it is larger than the sum of its proper divisors (416069952557).

791321783763 is a wasteful number, since it uses less digits than its factorization.

791321783763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49002066.

The product of its digits is 8001504, while the sum is 57.

The spelling of 791321783763 in words is "seven hundred ninety-one billion, three hundred twenty-one million, seven hundred eighty-three thousand, seven hundred sixty-three".