6665295652971 has 4 divisors (see below), whose sum is σ = 8887060870632. Its totient is φ = 4443530435312.

The previous prime is 6665295652931. The next prime is 6665295653039. The reversal of 6665295652971 is 1792565925666.

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 6665295652971 - 2²¹ = 6665293555819 is a prime.

It is a super-2 number, since 2×6665295652971² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6665295652896 and 6665295652905.

It is not an unprimeable number, because it can be changed into a prime (6665295652931) 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, 1110882608826 + ... + 1110882608831.

It is an arithmetic number, because the mean of its divisors is an integer number (2221765217658).

Almost surely, 2^{6665295652971} is an apocalyptic number.

6665295652971 is a deficient number, since it is larger than the sum of its proper divisors (2221765217661).

6665295652971 is a wasteful number, since it uses less digits than its factorization.

6665295652971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221765217660.

The product of its digits is 367416000, while the sum is 69.

The spelling of 6665295652971 in words is "six trillion, six hundred sixty-five billion, two hundred ninety-five million, six hundred fifty-two thousand, nine hundred seventy-one".