77225277499 has 2 divisors, whose sum is σ = 77225277500. Its totient is φ = 77225277498.

The previous prime is 77225277469. The next prime is 77225277553. The reversal of 77225277499 is 99477252277.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77225277499 - 2⁹ = 77225276987 is a prime.

It is not a weakly prime, because it can be changed into another prime (77225277419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38612638749 + 38612638750.

It is an arithmetic number, because the mean of its divisors is an integer number (38612638750).

Almost surely, 2^77225277499 is an apocalyptic number.

77225277499 is a deficient number, since it is larger than the sum of its proper divisors (1).

77225277499 is an equidigital number, since it uses as much as digits as its factorization.

77225277499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31116960, while the sum is 61.

The spelling of 77225277499 in words is "seventy-seven billion, two hundred twenty-five million, two hundred seventy-seven thousand, four hundred ninety-nine".