667167615999 has 6 divisors (see below), whose sum is σ = 963686556456. Its totient is φ = 444778410660.

The previous prime is 667167615953. The next prime is 667167616021. The reversal of 667167615999 is 999516761766.

It is not a de Polignac number, because 667167615999 - 2⁷ = 667167615871 is a prime.

It is a super-2 number, since 2×667167615999² (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 (667167615299) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37064867547 + ... + 37064867564.

It is an arithmetic number, because the mean of its divisors is an integer number (160614426076).

Almost surely, 2^667167615999 is an apocalyptic number.

667167615999 is a deficient number, since it is larger than the sum of its proper divisors (296518940457).

667167615999 is a wasteful number, since it uses less digits than its factorization.

667167615999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74129735117 (or 74129735114 counting only the distinct ones).

The product of its digits is 231472080, while the sum is 72.

The spelling of 667167615999 in words is "six hundred sixty-seven billion, one hundred sixty-seven million, six hundred fifteen thousand, nine hundred ninety-nine".