667674241872 has 80 divisors (see below), whose sum is σ = 1963437331968. Its totient is φ = 193528762240.

The previous prime is 667674241853. The next prime is 667674241873. The reversal of 667674241872 is 278142476766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667674241873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27477738 + ... + 27502025.

Almost surely, 2^667674241872 is an apocalyptic number.

It is an amenable number.

667674241872 is an abundant number, since it is smaller than the sum of its proper divisors (1295763090096).

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

667674241872 is a wasteful number, since it uses less digits than its factorization.

667674241872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54979808 (or 54979802 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 60.

The spelling of 667674241872 in words is "six hundred sixty-seven billion, six hundred seventy-four million, two hundred forty-one thousand, eight hundred seventy-two".