667487053145 has 16 divisors (see below), whose sum is σ = 874358972928. Its totient is φ = 485135274240.

The previous prime is 667487053139. The next prime is 667487053157. The reversal of 667487053145 is 541350784766.

It is a happy number.

It is not a de Polignac number, because 667487053145 - 2⁸ = 667487052889 is a prime.

It is a super-2 number, since 2×667487053145² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3786224 + ... + 3958593.

It is an arithmetic number, because the mean of its divisors is an integer number (54647435808).

Almost surely, 2^667487053145 is an apocalyptic number.

It is an amenable number.

667487053145 is a deficient number, since it is larger than the sum of its proper divisors (206871919783).

667487053145 is a wasteful number, since it uses less digits than its factorization.

667487053145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7746400.

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 667487053145 in words is "six hundred sixty-seven billion, four hundred eighty-seven million, fifty-three thousand, one hundred forty-five".