6461023565 has 16 divisors (see below), whose sum is σ = 8154349056. Its totient is φ = 4907697600.

The previous prime is 6461023423. The next prime is 6461023571. The reversal of 6461023565 is 5653201646.

It is a happy number.

It is not a de Polignac number, because 6461023565 - 2²⁶ = 6393914701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385031 + ... + 401460.

It is an arithmetic number, because the mean of its divisors is an integer number (509646816).

Almost surely, 2^6461023565 is an apocalyptic number.

It is an amenable number.

6461023565 is a deficient number, since it is larger than the sum of its proper divisors (1693325491).

6461023565 is a wasteful number, since it uses less digits than its factorization.

6461023565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786580.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 6461023565 is about 80380.4924406413. The cubic root of 6461023565 is about 1862.5178416080.

The spelling of 6461023565 in words is "six billion, four hundred sixty-one million, twenty-three thousand, five hundred sixty-five".