77200622497 has 2 divisors, whose sum is σ = 77200622498. Its totient is φ = 77200622496.

The previous prime is 77200622461. The next prime is 77200622501. The reversal of 77200622497 is 79422600277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49626027361 + 27574595136 = 222769^2 + 166056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77200622497 is a prime.

It is a super-2 number, since 2×77200622497² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77200623497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38600311248 + 38600311249.

It is an arithmetic number, because the mean of its divisors is an integer number (38600311249).

Almost surely, 2^77200622497 is an apocalyptic number.

It is an amenable number.

77200622497 is a deficient number, since it is larger than the sum of its proper divisors (1).

77200622497 is an equidigital number, since it uses as much as digits as its factorization.

77200622497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 592704, while the sum is 46.

The spelling of 77200622497 in words is "seventy-seven billion, two hundred million, six hundred twenty-two thousand, four hundred ninety-seven".