6681615354 has 24 divisors (see below), whose sum is σ = 15238772640. Its totient is φ = 2109983688.

The previous prime is 6681615301. The next prime is 6681615361. The reversal of 6681615354 is 4535161866.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9768102 + ... + 9768785.

It is an arithmetic number, because the mean of its divisors is an integer number (634948860).

Almost surely, 2^6681615354 is an apocalyptic number.

6681615354 is an abundant number, since it is smaller than the sum of its proper divisors (8557157286).

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

6681615354 is a wasteful number, since it uses less digits than its factorization.

6681615354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19536914 (or 19536911 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 6681615354 is about 81741.1484749266. The cubic root of 6681615354 is about 1883.4777329716.

The spelling of 6681615354 in words is "six billion, six hundred eighty-one million, six hundred fifteen thousand, three hundred fifty-four".