7801543680 has 176 divisors, whose sum is σ = 28517821440. Its totient is φ = 1783185408.

The previous prime is 7801543679. The next prime is 7801543693. The reversal of 7801543680 is 863451087.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71241 + ... + 143799.

Almost surely, 2^7801543680 is an apocalyptic number.

7801543680 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 7801543680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14258910720).

7801543680 is an abundant number, since it is smaller than the sum of its proper divisors (20716277760).

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

7801543680 is a wasteful number, since it uses less digits than its factorization.

7801543680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72594 (or 72576 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 7801543680 is about 88326.3475979846. The cubic root of 7801543680 is about 1983.3233037335.

The spelling of 7801543680 in words is "seven billion, eight hundred one million, five hundred forty-three thousand, six hundred eighty".