6461218607 has 4 divisors (see below), whose sum is σ = 6461450640. Its totient is φ = 6460986576.

The previous prime is 6461218591. The next prime is 6461218649. The reversal of 6461218607 is 7068121646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6461218607 - 2⁴ = 6461218591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6461218667) 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, 67478 + ... + 132195.

It is an arithmetic number, because the mean of its divisors is an integer number (1615362660).

Almost surely, 2^6461218607 is an apocalyptic number.

6461218607 is a deficient number, since it is larger than the sum of its proper divisors (232033).

6461218607 is a wasteful number, since it uses less digits than its factorization.

6461218607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232032.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 6461218607 is about 80381.7056736171. The cubic root of 6461218607 is about 1862.5365829909.

The spelling of 6461218607 in words is "six billion, four hundred sixty-one million, two hundred eighteen thousand, six hundred seven".