667232837540 has 24 divisors (see below), whose sum is σ = 1401761676672. Its totient is φ = 266784045920.

The previous prime is 667232837501. The next prime is 667232837543. The reversal of 667232837540 is 45738232766.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (667232837543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6767906 + ... + 6865785.

It is an arithmetic number, because the mean of its divisors is an integer number (58406736528).

Almost surely, 2^667232837540 is an apocalyptic number.

It is an amenable number.

667232837540 is an abundant number, since it is smaller than the sum of its proper divisors (734528839132).

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

667232837540 is a wasteful number, since it uses less digits than its factorization.

667232837540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13636147 (or 13636145 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 53.

The spelling of 667232837540 in words is "six hundred sixty-seven billion, two hundred thirty-two million, eight hundred thirty-seven thousand, five hundred forty".