6451563430 has 64 divisors (see below), whose sum is σ = 13227782400. Its totient is φ = 2245864320.

The previous prime is 6451563421. The next prime is 6451563431. The reversal of 6451563430 is 343651546.

It is a self number, because there is not a number n which added to its sum of digits gives 6451563430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6451563431) 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 31 ways as a sum of consecutive naturals, for example, 514981 + ... + 527359.

It is an arithmetic number, because the mean of its divisors is an integer number (206684100).

Almost surely, 2^6451563430 is an apocalyptic number.

6451563430 is an abundant number, since it is smaller than the sum of its proper divisors (6776218970).

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

6451563430 is a wasteful number, since it uses less digits than its factorization.

6451563430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12629.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 6451563430 is about 80321.6249213124. The cubic root of 6451563430 is about 1861.6083739087.

The spelling of 6451563430 in words is "six billion, four hundred fifty-one million, five hundred sixty-three thousand, four hundred thirty".