316661661669 has 16 divisors (see below), whose sum is σ = 429539733504. Its totient is φ = 207472316400.

The previous prime is 316661661623. The next prime is 316661661691. The reversal of 316661661669 is 966166166613.

It is not a de Polignac number, because 316661661669 - 2⁹ = 316661661157 is a prime.

It is a super-2 number, since 2×316661661669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316661666669) 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, 3281587 + ... + 3376704.

It is an arithmetic number, because the mean of its divisors is an integer number (26846233344).

Almost surely, 2^316661661669 is an apocalyptic number.

It is an amenable number.

316661661669 is a deficient number, since it is larger than the sum of its proper divisors (112878071835).

316661661669 is a wasteful number, since it uses less digits than its factorization.

316661661669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6658568.

The product of its digits is 7558272, while the sum is 57.

The spelling of 316661661669 in words is "three hundred sixteen billion, six hundred sixty-one million, six hundred sixty-one thousand, six hundred sixty-nine".