7878706164 has 48 divisors (see below), whose sum is σ = 23344316800. Its totient is φ = 2251058688.

The previous prime is 7878706163. The next prime is 7878706169. The reversal of 7878706164 is 4616078787.

It is a super-3 number, since 3×7878706164³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 7878706164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7878706163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5210029 + ... + 5211540.

Almost surely, 2^7878706164 is an apocalyptic number.

It is an amenable number.

7878706164 is an abundant number, since it is smaller than the sum of its proper divisors (15465610636).

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

7878706164 is a wasteful number, since it uses less digits than its factorization.

7878706164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10421589 (or 10421581 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The square root of 7878706164 is about 88762.0761586839. The cubic root of 7878706164 is about 1989.8406616359.

The spelling of 7878706164 in words is "seven billion, eight hundred seventy-eight million, seven hundred six thousand, one hundred sixty-four".