78293698559 has 12 divisors (see below), whose sum is σ = 81390473736. Its totient is φ = 75259604592.

The previous prime is 78293698493. The next prime is 78293698589. The reversal of 78293698559 is 95589639287.

It is a de Polignac number, because none of the positive numbers 2^k-78293698559 is a prime.

It is a super-2 number, since 2×78293698559² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78293698492 and 78293698501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78293698589) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101312 + ... + 408474.

It is an arithmetic number, because the mean of its divisors is an integer number (6782539478).

Almost surely, 2^78293698559 is an apocalyptic number.

78293698559 is a deficient number, since it is larger than the sum of its proper divisors (3096775177).

78293698559 is an equidigital number, since it uses as much as digits as its factorization.

78293698559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307366 (or 307283 counting only the distinct ones).

The product of its digits is 293932800, while the sum is 71.

The spelling of 78293698559 in words is "seventy-eight billion, two hundred ninety-three million, six hundred ninety-eight thousand, five hundred fifty-nine".