7878716142 has 16 divisors (see below), whose sum is σ = 17189926272. Its totient is φ = 2387489720.

The previous prime is 7878716117. The next prime is 7878716179. The reversal of 7878716142 is 2416178787.

It is a super-2 number, since 2×7878716142² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 59687178 + ... + 59687309.

It is an arithmetic number, because the mean of its divisors is an integer number (1074370392).

Almost surely, 2^7878716142 is an apocalyptic number.

7878716142 is an abundant number, since it is smaller than the sum of its proper divisors (9311210130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7878716142 is a wasteful number, since it uses less digits than its factorization.

7878716142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119374503.

The product of its digits is 1053696, while the sum is 51.

The square root of 7878716142 is about 88762.1323651026. The cubic root of 7878716142 is about 1989.8415016479.

The spelling of 7878716142 in words is "seven billion, eight hundred seventy-eight million, seven hundred sixteen thousand, one hundred forty-two".