78106253139 has 12 divisors (see below), whose sum is σ = 113937175872. Its totient is φ = 51555282000.

The previous prime is 78106253123. The next prime is 78106253153. The reversal of 78106253139 is 93135260187.

78106253139 is a `hidden beast` number, since 7 + 8 + 1 + 0 + 625 + 3 + 13 + 9 = 666.

It is not a de Polignac number, because 78106253139 - 2⁴ = 78106253123 is a prime.

It is a super-3 number, since 3×78106253139³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 78106253094 and 78106253103.

It is not an unprimeable number, because it can be changed into a prime (78106253039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42961827 + ... + 42963644.

It is an arithmetic number, because the mean of its divisors is an integer number (9494764656).

Almost surely, 2^78106253139 is an apocalyptic number.

78106253139 is a deficient number, since it is larger than the sum of its proper divisors (35830922733).

78106253139 is a wasteful number, since it uses less digits than its factorization.

78106253139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85925578 (or 85925575 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 78106253139 in words is "seventy-eight billion, one hundred six million, two hundred fifty-three thousand, one hundred thirty-nine".