667452468440 has 64 divisors (see below), whose sum is σ = 1553787100800. Its totient is φ = 257735930368.

The previous prime is 667452468409. The next prime is 667452468457. The reversal of 667452468440 is 44864254766.

667452468440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×667452468440³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8366822 + ... + 8446218.

It is an arithmetic number, because the mean of its divisors is an integer number (24277923450).

Almost surely, 2^667452468440 is an apocalyptic number.

It is an amenable number.

667452468440 is an abundant number, since it is smaller than the sum of its proper divisors (886334632360).

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

667452468440 is a wasteful number, since it uses less digits than its factorization.

667452468440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86684 (or 86680 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 56.

The spelling of 667452468440 in words is "six hundred sixty-seven billion, four hundred fifty-two million, four hundred sixty-eight thousand, four hundred forty".