7875913780 has 24 divisors (see below), whose sum is σ = 18902193408. Its totient is φ = 2700313248.

The previous prime is 7875913711. The next prime is 7875913781. The reversal of 7875913780 is 873195787.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7875913781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28128124 + ... + 28128403.

It is an arithmetic number, because the mean of its divisors is an integer number (787591392).

Almost surely, 2^7875913780 is an apocalyptic number.

7875913780 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7875913780 is an abundant number, since it is smaller than the sum of its proper divisors (11026279628).

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

7875913780 is a wasteful number, since it uses less digits than its factorization.

7875913780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56256543 (or 56256541 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 55.

The square root of 7875913780 is about 88746.3451641813. The cubic root of 7875913780 is about 1989.6055529909.

The spelling of 7875913780 in words is "seven billion, eight hundred seventy-five million, nine hundred thirteen thousand, seven hundred eighty".