7859978700 has 144 divisors (see below), whose sum is σ = 26828949504. Its totient is φ = 1738598400.

The previous prime is 7859978641. The next prime is 7859978701. The reversal of 7859978700 is 78799587.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (7859978701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4732 + ... + 125468.

Almost surely, 2^7859978700 is an apocalyptic number.

7859978700 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7859978700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13414474752).

7859978700 is an abundant number, since it is smaller than the sum of its proper divisors (18968970804).

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

7859978700 is a wasteful number, since it uses less digits than its factorization.

7859978700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120792 (or 120785 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 60.

The square root of 7859978700 is about 88656.5209107599. The cubic root of 7859978700 is about 1988.2628122901.

The spelling of 7859978700 in words is "seven billion, eight hundred fifty-nine million, nine hundred seventy-eight thousand, seven hundred".