6451421734 has 16 divisors (see below), whose sum is σ = 9800678160. Its totient is φ = 3184786080.

The previous prime is 6451421699. The next prime is 6451421737. The reversal of 6451421734 is 4371241546.

It is a junction number, because it is equal to n+sod(n) for n = 6451421693 and 6451421702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6451421737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13789 + ... + 114424.

It is an arithmetic number, because the mean of its divisors is an integer number (612542385).

Almost surely, 2^6451421734 is an apocalyptic number.

6451421734 is a deficient number, since it is larger than the sum of its proper divisors (3349256426).

6451421734 is a wasteful number, since it uses less digits than its factorization.

6451421734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128535.

The product of its digits is 80640, while the sum is 37.

The square root of 6451421734 is about 80320.7428626006. The cubic root of 6451421734 is about 1861.5947449440.

The spelling of 6451421734 in words is "six billion, four hundred fifty-one million, four hundred twenty-one thousand, seven hundred thirty-four".