6651671715 has 96 divisors (see below), whose sum is σ = 13112736000. Its totient is φ = 3092173056.

The previous prime is 6651671701. The next prime is 6651671717. The reversal of 6651671715 is 5171761566.

6651671715 is a `hidden beast` number, since 66 + 516 + 7 + 1 + 71 + 5 = 666.

It is not a de Polignac number, because 6651671715 - 2¹² = 6651667619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (6651671717) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4211796 + ... + 4213374.

It is an arithmetic number, because the mean of its divisors is an integer number (136591000).

Almost surely, 2^6651671715 is an apocalyptic number.

6651671715 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6651671715 is a deficient number, since it is larger than the sum of its proper divisors (6461064285).

6651671715 is a wasteful number, since it uses less digits than its factorization.

6651671715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001 (or 1998 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 6651671715 is about 81557.7814497182. The cubic root of 6651671715 is about 1880.6599195081.

The spelling of 6651671715 in words is "six billion, six hundred fifty-one million, six hundred seventy-one thousand, seven hundred fifteen".