7156885680 has 320 divisors, whose sum is σ = 29083852800. Its totient is φ = 1582986240.

The previous prime is 7156885651. The next prime is 7156885699. The reversal of 7156885680 is 865886517.

7156885680 is a `hidden beast` number, since 7 + 15 + 68 + 8 + 568 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 461086 + ... + 476354.

It is an arithmetic number, because the mean of its divisors is an integer number (90887040).

Almost surely, 2^7156885680 is an apocalyptic number.

7156885680 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 7156885680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14541926400).

7156885680 is an abundant number, since it is smaller than the sum of its proper divisors (21926967120).

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

7156885680 is a wasteful number, since it uses less digits than its factorization.

7156885680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15329 (or 15317 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The square root of 7156885680 is about 84598.3787078689. The cubic root of 7156885680 is about 1927.1167522186.

The spelling of 7156885680 in words is "seven billion, one hundred fifty-six million, eight hundred eighty-five thousand, six hundred eighty".