791587949785187 has 2 divisors, whose sum is σ = 791587949785188. Its totient is φ = 791587949785186.

The previous prime is 791587949785183. The next prime is 791587949785231. The reversal of 791587949785187 is 781587949785197.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 791587949785187 - 2² = 791587949785183 is a prime.

It is a super-2 number, since 2×791587949785187² (a number of 31 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 791587949785187.

It is not a weakly prime, because it can be changed into another prime (791587949785183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395793974892593 + 395793974892594.

It is an arithmetic number, because the mean of its divisors is an integer number (395793974892594).

Almost surely, 2^{791587949785187} is an apocalyptic number.

791587949785187 is a deficient number, since it is larger than the sum of its proper divisors (1).

791587949785187 is an equidigital number, since it uses as much as digits as its factorization.

791587949785187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89616844800, while the sum is 95.

The spelling of 791587949785187 in words is "seven hundred ninety-one trillion, five hundred eighty-seven billion, nine hundred forty-nine million, seven hundred eighty-five thousand, one hundred eighty-seven".