6451772004 has 36 divisors (see below), whose sum is σ = 16316003340. Its totient is φ = 2149620480.

The previous prime is 6451771979. The next prime is 6451772009. The reversal of 6451772004 is 4002771546.

6451772004 is a `hidden beast` number, since 645 + 1 + 7 + 7 + 2 + 0 + 0 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5528219904 + 923552100 = 74352^2 + 30390^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6451772004.

It is not an unprimeable number, because it can be changed into a prime (6451772009) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 42832 + ... + 121400.

It is an arithmetic number, because the mean of its divisors is an integer number (453222315).

Almost surely, 2^6451772004 is an apocalyptic number.

It is an amenable number.

6451772004 is an abundant number, since it is smaller than the sum of its proper divisors (9864231336).

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

6451772004 is a wasteful number, since it uses less digits than its factorization.

6451772004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80860 (or 80855 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 6451772004 is about 80322.9232784764. The cubic root of 6451772004 is about 1861.6284351401.

The spelling of 6451772004 in words is "six billion, four hundred fifty-one million, seven hundred seventy-two thousand, four".