7790694881 has 2 divisors, whose sum is σ = 7790694882. Its totient is φ = 7790694880.

The previous prime is 7790694787. The next prime is 7790694883. The reversal of 7790694881 is 1884960977.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4599009856 + 3191685025 = 67816^2 + 56495^2 .

It is a cyclic number.

It is not a de Polignac number, because 7790694881 - 2¹⁸ = 7790432737 is a prime.

It is a super-2 number, since 2×7790694881² (a number of 21 digits) contains 22 as substring.

Together with 7790694883, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7790694881.

It is not a weakly prime, because it can be changed into another prime (7790694883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3895347440 + 3895347441.

It is an arithmetic number, because the mean of its divisors is an integer number (3895347441).

Almost surely, 2^7790694881 is an apocalyptic number.

It is an amenable number.

7790694881 is a deficient number, since it is larger than the sum of its proper divisors (1).

7790694881 is an equidigital number, since it uses as much as digits as its factorization.

7790694881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 59.

The square root of 7790694881 is about 88264.9130798870. The cubic root of 7790694881 is about 1982.4035431434.

The spelling of 7790694881 in words is "seven billion, seven hundred ninety million, six hundred ninety-four thousand, eight hundred eighty-one".