78123427119 has 12 divisors (see below), whose sum is σ = 115245907296. Its totient is φ = 50974150752.

The previous prime is 78123427117. The next prime is 78123427169. The reversal of 78123427119 is 91172432187.

It is not a de Polignac number, because 78123427119 - 2¹ = 78123427117 is a prime.

It is a super-2 number, since 2×78123427119² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78123427117) 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, 92344054 + ... + 92344899.

It is an arithmetic number, because the mean of its divisors is an integer number (9603825608).

Almost surely, 2^78123427119 is an apocalyptic number.

78123427119 is a deficient number, since it is larger than the sum of its proper divisors (37122480177).

78123427119 is a wasteful number, since it uses less digits than its factorization.

78123427119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184689006 (or 184689003 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The spelling of 78123427119 in words is "seventy-eight billion, one hundred twenty-three million, four hundred twenty-seven thousand, one hundred nineteen".