12139418078 has 16 divisors (see below), whose sum is σ = 19069443360. Its totient is φ = 5784842976.

The previous prime is 12139418069. The next prime is 12139418111. The reversal of 12139418078 is 87081493121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463613 + ... + 489096.

It is an arithmetic number, because the mean of its divisors is an integer number (1191840210).

Almost surely, 2^12139418078 is an apocalyptic number.

12139418078 is a deficient number, since it is larger than the sum of its proper divisors (6930025282).

12139418078 is a wasteful number, since it uses less digits than its factorization.

12139418078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953011.

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 12139418078 in words is "twelve billion, one hundred thirty-nine million, four hundred eighteen thousand, seventy-eight".