6461642743 has 16 divisors (see below), whose sum is σ = 6800446080. Its totient is φ = 6131020896.

The previous prime is 6461642731. The next prime is 6461642753. The reversal of 6461642743 is 3472461646.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6461642743 - 2¹⁷ = 6461511671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6461642743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6461642713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 856996 + ... + 864502.

It is an arithmetic number, because the mean of its divisors is an integer number (425027880).

Almost surely, 2^6461642743 is an apocalyptic number.

6461642743 is a deficient number, since it is larger than the sum of its proper divisors (338803337).

6461642743 is a wasteful number, since it uses less digits than its factorization.

6461642743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8046.

The product of its digits is 580608, while the sum is 43.

The square root of 6461642743 is about 80384.3438923277. The cubic root of 6461642743 is about 1862.5773364761.

The spelling of 6461642743 in words is "six billion, four hundred sixty-one million, six hundred forty-two thousand, seven hundred forty-three".