667523523252 has 24 divisors (see below), whose sum is σ = 1559835367776. Its totient is φ = 222182058208.

The previous prime is 667523523223. The next prime is 667523523301. The reversal of 667523523252 is 252325325766.

It is a happy number.

It is a congruent number.

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, 40714323 + ... + 40730714.

It is an arithmetic number, because the mean of its divisors is an integer number (64993140324).

Almost surely, 2^667523523252 is an apocalyptic number.

It is an amenable number.

667523523252 is an abundant number, since it is smaller than the sum of its proper divisors (892311844524).

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

667523523252 is a wasteful number, since it uses less digits than its factorization.

667523523252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81445727 (or 81445725 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 48.

The spelling of 667523523252 in words is "six hundred sixty-seven billion, five hundred twenty-three million, five hundred twenty-three thousand, two hundred fifty-two".