667214537522 has 16 divisors (see below), whose sum is σ = 1085675317272. Its totient is φ = 305697394560.

The previous prime is 667214537449. The next prime is 667214537531. The reversal of 667214537522 is 225735412766.

667214537522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 639342568921 + 27871968601 = 799589^2 + 166949^2 .

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, 93653729 + ... + 93660852.

Almost surely, 2^667214537522 is an apocalyptic number.

667214537522 is a deficient number, since it is larger than the sum of its proper divisors (418460779750).

667214537522 is a wasteful number, since it uses less digits than its factorization.

667214537522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187314733.

The product of its digits is 4233600, while the sum is 50.

The spelling of 667214537522 in words is "six hundred sixty-seven billion, two hundred fourteen million, five hundred thirty-seven thousand, five hundred twenty-two".