31666675541669 has 4 divisors (see below), whose sum is σ = 36190486333344. Its totient is φ = 27142864749996.

The previous prime is 31666675541659. The next prime is 31666675541719. The reversal of 31666675541669 is 96614557666613.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31666675541669 is a prime.

It is a super-2 number, since 2×31666675541669² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31666675541629) 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, 2261905395827 + ... + 2261905395840.

It is an arithmetic number, because the mean of its divisors is an integer number (9047621583336).

Almost surely, 2^{31666675541669} is an apocalyptic number.

It is an amenable number.

31666675541669 is a deficient number, since it is larger than the sum of its proper divisors (4523810791675).

31666675541669 is an equidigital number, since it uses as much as digits as its factorization.

31666675541669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523810791674.

The product of its digits is 881798400, while the sum is 71.

The spelling of 31666675541669 in words is "thirty-one trillion, six hundred sixty-six billion, six hundred seventy-five million, five hundred forty-one thousand, six hundred sixty-nine".