665127876108 has 24 divisors (see below), whose sum is σ = 1593910046512. Its totient is φ = 215717148864.

The previous prime is 665127876103. The next prime is 665127876113. The reversal of 665127876108 is 801678721566.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (665127876103) and next prime (665127876113).

It is not an unprimeable number, because it can be changed into a prime (665127876103) 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, 749017435 + ... + 749018322.

Almost surely, 2^665127876108 is an apocalyptic number.

It is an amenable number.

665127876108 is an abundant number, since it is smaller than the sum of its proper divisors (928782170404).

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

665127876108 is a wasteful number, since it uses less digits than its factorization.

665127876108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498035801 (or 1498035799 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 665127876108 in words is "six hundred sixty-five billion, one hundred twenty-seven million, eight hundred seventy-six thousand, one hundred eight".