6851280972 has 144 divisors (see below), whose sum is σ = 17316905760. Its totient is φ = 2105284608.

The previous prime is 6851280967. The next prime is 6851280991. The reversal of 6851280972 is 2790821586.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34777978 + ... + 34778174.

It is an arithmetic number, because the mean of its divisors is an integer number (120256290).

Almost surely, 2^6851280972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6851280972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8658452880).

6851280972 is an abundant number, since it is smaller than the sum of its proper divisors (10465624788).

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

6851280972 is a wasteful number, since it uses less digits than its factorization.

6851280972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 6851280972 is about 82772.4650593420. The cubic root of 6851280972 is about 1899.2869874938.

The spelling of 6851280972 in words is "six billion, eight hundred fifty-one million, two hundred eighty thousand, nine hundred seventy-two".