667662863136 has 48 divisors (see below), whose sum is σ = 1785683237184. Its totient is φ = 218355148544.

The previous prime is 667662863099. The next prime is 667662863141. The reversal of 667662863136 is 631368266766.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×667662863136² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 667662863136.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65606436 + ... + 65616611.

It is an arithmetic number, because the mean of its divisors is an integer number (37201734108).

Almost surely, 2^667662863136 is an apocalyptic number.

It is an amenable number.

667662863136 is an abundant number, since it is smaller than the sum of its proper divisors (1118020374048).

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

667662863136 is a wasteful number, since it uses less digits than its factorization.

667662863136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131223113 (or 131223105 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 60.

The spelling of 667662863136 in words is "six hundred sixty-seven billion, six hundred sixty-two million, eight hundred sixty-three thousand, one hundred thirty-six".