664431453016 has 16 divisors (see below), whose sum is σ = 1259806829400. Its totient is φ = 328482965184.

The previous prime is 664431452999. The next prime is 664431453041. The reversal of 664431453016 is 610354134466.

664431453016 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 3 ways as a sum of consecutive naturals, for example, 466594410 + ... + 466595833.

Almost surely, 2^664431453016 is an apocalyptic number.

It is an amenable number.

664431453016 is a deficient number, since it is larger than the sum of its proper divisors (595375376384).

664431453016 is a wasteful number, since it uses less digits than its factorization.

664431453016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933190338 (or 933190334 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 664431453016 in words is "six hundred sixty-four billion, four hundred thirty-one million, four hundred fifty-three thousand, sixteen".