6465212461 has 4 divisors (see below), whose sum is σ = 6465409632. Its totient is φ = 6465015292.

The previous prime is 6465212447. The next prime is 6465212519. The reversal of 6465212461 is 1642125646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6465212461 - 2³¹ = 4317728813 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 6465212461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6465212401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36271 + ... + 119356.

It is an arithmetic number, because the mean of its divisors is an integer number (1616352408).

Almost surely, 2^6465212461 is an apocalyptic number.

It is an amenable number.

6465212461 is a deficient number, since it is larger than the sum of its proper divisors (197171).

6465212461 is a wasteful number, since it uses less digits than its factorization.

6465212461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197170.

The product of its digits is 69120, while the sum is 37.

The square root of 6465212461 is about 80406.5448890823. The cubic root of 6465212461 is about 1862.9202653617.

The spelling of 6465212461 in words is "six billion, four hundred sixty-five million, two hundred twelve thousand, four hundred sixty-one".