2768725991 has 2 divisors, whose sum is σ = 2768725992. Its totient is φ = 2768725990.

The previous prime is 2768725957. The next prime is 2768726041. The reversal of 2768725991 is 1995278672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2768725991 - 2¹⁰ = 2768724967 is a prime.

It is a super-2 number, since 2×2768725991² = 15331687226477864162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2768725931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1384362995 + 1384362996.

It is an arithmetic number, because the mean of its divisors is an integer number (1384362996).

Almost surely, 2^2768725991 is an apocalyptic number.

2768725991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2768725991 is an equidigital number, since it uses as much as digits as its factorization.

2768725991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 56.

The square root of 2768725991 is about 52618.6848087255. The cubic root of 2768725991 is about 1404.1925327410.

The spelling of 2768725991 in words is "two billion, seven hundred sixty-eight million, seven hundred twenty-five thousand, nine hundred ninety-one".