6416625861 has 48 divisors (see below), whose sum is σ = 9688154112. Its totient is φ = 4087908000.

The previous prime is 6416625821. The next prime is 6416625883. The reversal of 6416625861 is 1685266146.

6416625861 is a `hidden beast` number, since 6 + 4 + 1 + 6 + 62 + 586 + 1 = 666.

It is not a de Polignac number, because 6416625861 - 2⁹ = 6416625349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6416625821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9394426 + ... + 9395108.

It is an arithmetic number, because the mean of its divisors is an integer number (201836544).

Almost surely, 2^6416625861 is an apocalyptic number.

It is an amenable number.

6416625861 is a deficient number, since it is larger than the sum of its proper divisors (3271528251).

6416625861 is a wasteful number, since it uses less digits than its factorization.

6416625861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1091 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 6416625861 is about 80103.8442335947. The cubic root of 6416625861 is about 1858.2418601711.

The spelling of 6416625861 in words is "six billion, four hundred sixteen million, six hundred twenty-five thousand, eight hundred sixty-one".