666400241624 has 48 divisors (see below), whose sum is σ = 1359422314920. Its totient is φ = 306111536640.

The previous prime is 666400241603. The next prime is 666400241641. The reversal of 666400241624 is 426142004666.

666400241624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 882737 + ... + 1453280.

Almost surely, 2^666400241624 is an apocalyptic number.

It is an amenable number.

666400241624 is an abundant number, since it is smaller than the sum of its proper divisors (693022073296).

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

666400241624 is a wasteful number, since it uses less digits than its factorization.

666400241624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336260 (or 2336243 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 666400241624 in words is "six hundred sixty-six billion, four hundred million, two hundred forty-one thousand, six hundred twenty-four".