667067815048 has 32 divisors (see below), whose sum is σ = 1266388283160. Its totient is φ = 329379194880.

The previous prime is 667067815019. The next prime is 667067815147. The reversal of 667067815048 is 840518760766.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 264424265284 + 402643549764 = 514222^2 + 634542^2 .

It is a junction number, because it is equal to n+sod(n) for n = 667067814983 and 667067815001.

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, 574611 + ... + 1290082.

Almost surely, 2^667067815048 is an apocalyptic number.

It is an amenable number.

667067815048 is a deficient number, since it is larger than the sum of its proper divisors (599320468112).

667067815048 is a wasteful number, since it uses less digits than its factorization.

667067815048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865257 (or 1865253 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 667067815048 in words is "six hundred sixty-seven billion, sixty-seven million, eight hundred fifteen thousand, forty-eight".