6881555730 has 64 divisors (see below), whose sum is σ = 19102583808. Its totient is φ = 1553972160.

The previous prime is 6881555719. The next prime is 6881555773. The reversal of 6881555730 is 375551886.

It is a self number, because there is not a number n which added to its sum of digits gives 6881555730.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179976 + ... + 214835.

It is an arithmetic number, because the mean of its divisors is an integer number (298477872).

Almost surely, 2^6881555730 is an apocalyptic number.

6881555730 is an abundant number, since it is smaller than the sum of its proper divisors (12221028078).

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

6881555730 is a wasteful number, since it uses less digits than its factorization.

6881555730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394911.

The product of its (nonzero) digits is 1008000, while the sum is 48.

The square root of 6881555730 is about 82955.1428785461. The cubic root of 6881555730 is about 1902.0804293936.

The spelling of 6881555730 in words is "six billion, eight hundred eighty-one million, five hundred fifty-five thousand, seven hundred thirty".