77009393999 has 2 divisors, whose sum is σ = 77009394000. Its totient is φ = 77009393998.

The previous prime is 77009393953. The next prime is 77009394017. The reversal of 77009393999 is 99939390077.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77009393999 - 2¹⁶ = 77009328463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77009393299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38504696999 + 38504697000.

It is an arithmetic number, because the mean of its divisors is an integer number (38504697000).

Almost surely, 2^77009393999 is an apocalyptic number.

77009393999 is a deficient number, since it is larger than the sum of its proper divisors (1).

77009393999 is an equidigital number, since it uses as much as digits as its factorization.

77009393999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26040609, while the sum is 65.

The spelling of 77009393999 in words is "seventy-seven billion, nine million, three hundred ninety-three thousand, nine hundred ninety-nine".