667231535280 has 160 divisors (see below), whose sum is σ = 2216477136384. Its totient is φ = 165444333568.

The previous prime is 667231535233. The next prime is 667231535281. The reversal of 667231535280 is 82535132766.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (667231535281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 646524 + ... + 1323803.

Almost surely, 2^667231535280 is an apocalyptic number.

667231535280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667231535280 is an abundant number, since it is smaller than the sum of its proper divisors (1549245601104).

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

667231535280 is a wasteful number, since it uses less digits than its factorization.

667231535280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970443 (or 1970437 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 667231535280 in words is "six hundred sixty-seven billion, two hundred thirty-one million, five hundred thirty-five thousand, two hundred eighty".