6461624043 has 64 divisors (see below), whose sum is σ = 11203568640. Its totient is φ = 3604435200.

The previous prime is 6461624033. The next prime is 6461624047. The reversal of 6461624043 is 3404261646.

6461624043 is a `hidden beast` number, since 646 + 1 + 6 + 2 + 4 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 6461624043 - 2²¹ = 6459526891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6461623989 and 6461624007.

It is not an unprimeable number, because it can be changed into a prime (6461624047) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1577428 + ... + 1581518.

It is an arithmetic number, because the mean of its divisors is an integer number (175055760).

Almost surely, 2^6461624043 is an apocalyptic number.

6461624043 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6461624043 is a deficient number, since it is larger than the sum of its proper divisors (4741944597).

6461624043 is a wasteful number, since it uses less digits than its factorization.

6461624043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305 (or 4299 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 6461624043 is about 80384.2275760612. The cubic root of 6461624043 is about 1862.5755397075.

Adding to 6461624043 its reverse (3404261646), we get a palindrome (9865885689).

The spelling of 6461624043 in words is "six billion, four hundred sixty-one million, six hundred twenty-four thousand, forty-three".