6401658716 has 12 divisors (see below), whose sum is σ = 11206075440. Its totient is φ = 3199922880.

The previous prime is 6401658713. The next prime is 6401658721. The reversal of 6401658716 is 6178561046.

It is a super-2 number, since 2×6401658716² = 81962468632277537312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401658713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210605 + ... + 239076.

It is an arithmetic number, because the mean of its divisors is an integer number (933839620).

Almost surely, 2^6401658716 is an apocalyptic number.

It is an amenable number.

6401658716 is a deficient number, since it is larger than the sum of its proper divisors (4804416724).

6401658716 is a wasteful number, since it uses less digits than its factorization.

6401658716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453244 (or 453242 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 6401658716 is about 80010.3663033735. The cubic root of 6401658716 is about 1856.7959170415.

The spelling of 6401658716 in words is "six billion, four hundred one million, six hundred fifty-eight thousand, seven hundred sixteen".