6461205123 has 8 divisors (see below), whose sum is σ = 8617259200. Its totient is φ = 4306310568.

The previous prime is 6461205083. The next prime is 6461205169. The reversal of 6461205123 is 3215021646.

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

It is not a de Polignac number, because 6461205123 - 2¹⁴ = 6461188739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6461205323) 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 7 ways as a sum of consecutive naturals, for example, 276793 + ... + 299226.

It is an arithmetic number, because the mean of its divisors is an integer number (1077157400).

Almost surely, 2^6461205123 is an apocalyptic number.

6461205123 is a deficient number, since it is larger than the sum of its proper divisors (2156054077).

6461205123 is a wasteful number, since it uses less digits than its factorization.

6461205123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579761.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 6461205123 is about 80381.6217987669. The cubic root of 6461205123 is about 1862.5352873395.

Adding to 6461205123 its reverse (3215021646), we get a palindrome (9676226769).

The spelling of 6461205123 in words is "six billion, four hundred sixty-one million, two hundred five thousand, one hundred twenty-three".