12617078678 has 8 divisors (see below), whose sum is σ = 19536121920. Its totient is φ = 6105038040.

The previous prime is 12617078657. The next prime is 12617078689. The reversal of 12617078678 is 87687071621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101750573 + ... + 101750696.

It is an arithmetic number, because the mean of its divisors is an integer number (2442015240).

Almost surely, 2^12617078678 is an apocalyptic number.

12617078678 is a deficient number, since it is larger than the sum of its proper divisors (6919043242).

12617078678 is a wasteful number, since it uses less digits than its factorization.

12617078678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203501302.

The product of its (nonzero) digits is 1580544, while the sum is 53.

The spelling of 12617078678 in words is "twelve billion, six hundred seventeen million, seventy-eight thousand, six hundred seventy-eight".