78362559139 has 2 divisors, whose sum is σ = 78362559140. Its totient is φ = 78362559138.

The previous prime is 78362559133. The next prime is 78362559173. The reversal of 78362559139 is 93195526387.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78362559139 - 2³¹ = 76215075491 is a prime.

It is a super-2 number, since 2×78362559139² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78362559133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39181279569 + 39181279570.

It is an arithmetic number, because the mean of its divisors is an integer number (39181279570).

Almost surely, 2^78362559139 is an apocalyptic number.

78362559139 is a deficient number, since it is larger than the sum of its proper divisors (1).

78362559139 is an equidigital number, since it uses as much as digits as its factorization.

78362559139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12247200, while the sum is 58.

The spelling of 78362559139 in words is "seventy-eight billion, three hundred sixty-two million, five hundred fifty-nine thousand, one hundred thirty-nine".