78299099287 has 2 divisors, whose sum is σ = 78299099288. Its totient is φ = 78299099286.

The previous prime is 78299099257. The next prime is 78299099293.

78299099287 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78299099287 is a prime.

It is a super-2 number, since 2×78299099287² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78299099257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39149549643 + 39149549644.

It is an arithmetic number, because the mean of its divisors is an integer number (39149549644).

Almost surely, 2^78299099287 is an apocalyptic number.

78299099287 is a deficient number, since it is larger than the sum of its proper divisors (1).

78299099287 is an equidigital number, since it uses as much as digits as its factorization.

78299099287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82301184, while the sum is 70.

The spelling of 78299099287 in words is "seventy-eight billion, two hundred ninety-nine million, ninety-nine thousand, two hundred eighty-seven".