318666866069 has 4 divisors (see below), whose sum is σ = 318669864480. Its totient is φ = 318663867660.

The previous prime is 318666865997. The next prime is 318666866081. The reversal of 318666866069 is 960668666813.

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 not a de Polignac number, because 318666866069 - 2¹² = 318666861973 is a prime.

It is a super-2 number, since 2×318666866069² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 318666865996 and 318666866014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318666866269) 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, 1333697 + ... + 1554374.

It is an arithmetic number, because the mean of its divisors is an integer number (79667466120).

Almost surely, 2^318666866069 is an apocalyptic number.

It is an amenable number.

318666866069 is a deficient number, since it is larger than the sum of its proper divisors (2998411).

318666866069 is a wasteful number, since it uses less digits than its factorization.

318666866069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998410.

The product of its (nonzero) digits is 80621568, while the sum is 65.

The spelling of 318666866069 in words is "three hundred eighteen billion, six hundred sixty-six million, eight hundred sixty-six thousand, sixty-nine".