6666467512731 has 16 divisors (see below), whose sum is σ = 9988553331456. Its totient is φ = 3924074522016.

The previous prime is 6666467512709. The next prime is 6666467512741. The reversal of 6666467512731 is 1372157646666.

It is not a de Polignac number, because 6666467512731 - 2¹³ = 6666467504539 is a prime.

It is a super-2 number, since 2×6666467512731² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6666467512741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3715978765 + ... + 3715980558.

It is an arithmetic number, because the mean of its divisors is an integer number (624284583216).

Almost surely, 2^{6666467512731} is an apocalyptic number.

6666467512731 is a deficient number, since it is larger than the sum of its proper divisors (3322085818725).

6666467512731 is a wasteful number, since it uses less digits than its factorization.

6666467512731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7431959362.

The product of its digits is 45722880, while the sum is 60.

The spelling of 6666467512731 in words is "six trillion, six hundred sixty-six billion, four hundred sixty-seven million, five hundred twelve thousand, seven hundred thirty-one".