6845751972 has 18 divisors (see below), whose sum is σ = 17304539798. Its totient is φ = 2281917312.

The previous prime is 6845751949. The next prime is 6845751989. The reversal of 6845751972 is 2791575486.

6845751972 is a `hidden beast` number, since 6 + 8 + 4 + 57 + 519 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6775594596 + 70157376 = 82314^2 + 8376^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 95079853 + ... + 95079924.

Almost surely, 2^6845751972 is an apocalyptic number.

It is an amenable number.

6845751972 is an abundant number, since it is smaller than the sum of its proper divisors (10458787826).

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

6845751972 is a wasteful number, since it uses less digits than its factorization.

6845751972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190159787 (or 190159782 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The square root of 6845751972 is about 82739.0595305506. The cubic root of 6845751972 is about 1898.7759402953.

The spelling of 6845751972 in words is "six billion, eight hundred forty-five million, seven hundred fifty-one thousand, nine hundred seventy-two".