78298127899 has 2 divisors, whose sum is σ = 78298127900. Its totient is φ = 78298127898.

The previous prime is 78298127857. The next prime is 78298127909. The reversal of 78298127899 is 99872189287.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78298127899 - 2¹⁵ = 78298095131 is a prime.

It is a super-2 number, since 2×78298127899² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78298127099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39149063949 + 39149063950.

It is an arithmetic number, because the mean of its divisors is an integer number (39149063950).

Almost surely, 2^78298127899 is an apocalyptic number.

78298127899 is a deficient number, since it is larger than the sum of its proper divisors (1).

78298127899 is an equidigital number, since it uses as much as digits as its factorization.

78298127899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73156608, while the sum is 70.

The spelling of 78298127899 in words is "seventy-eight billion, two hundred ninety-eight million, one hundred twenty-seven thousand, eight hundred ninety-nine".