667418168112 has 40 divisors (see below), whose sum is σ = 1724909955840. Its totient is φ = 222376418880.

The previous prime is 667418168099. The next prime is 667418168117. The reversal of 667418168112 is 211861814766.

It is a super-2 number, since 2×667418168112² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667418168117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2897412 + ... + 3119267.

It is an arithmetic number, because the mean of its divisors is an integer number (43122748896).

Almost surely, 2^667418168112 is an apocalyptic number.

It is an amenable number.

667418168112 is an abundant number, since it is smaller than the sum of its proper divisors (1057491787728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667418168112 is a wasteful number, since it uses less digits than its factorization.

667418168112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6019001 (or 6018995 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The spelling of 667418168112 in words is "six hundred sixty-seven billion, four hundred eighteen million, one hundred sixty-eight thousand, one hundred twelve".