6451276645 has 8 divisors (see below), whose sum is σ = 8445307680. Its totient is φ = 4691837520.

The previous prime is 6451276619. The next prime is 6451276687. The reversal of 6451276645 is 5466721546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6451276645 - 2¹⁷ = 6451145573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6451276595 and 6451276604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58647915 + ... + 58648024.

It is an arithmetic number, because the mean of its divisors is an integer number (1055663460).

Almost surely, 2^6451276645 is an apocalyptic number.

It is an amenable number.

6451276645 is a deficient number, since it is larger than the sum of its proper divisors (1994031035).

6451276645 is a wasteful number, since it uses less digits than its factorization.

6451276645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117295955.

The product of its digits is 1209600, while the sum is 46.

The square root of 6451276645 is about 80319.8396723997. The cubic root of 6451276645 is about 1861.5807894183.

The spelling of 6451276645 in words is "six billion, four hundred fifty-one million, two hundred seventy-six thousand, six hundred forty-five".