664860488141 has 16 divisors (see below), whose sum is σ = 696163023360. Its totient is φ = 634118372160.

The previous prime is 664860488119. The next prime is 664860488167. The reversal of 664860488141 is 141884068466.

It is a cyclic number.

It is not a de Polignac number, because 664860488141 - 2⁶ = 664860488077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664860488191) 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, 27483071 + ... + 27507251.

It is an arithmetic number, because the mean of its divisors is an integer number (43510188960).

Almost surely, 2^664860488141 is an apocalyptic number.

It is an amenable number.

664860488141 is a deficient number, since it is larger than the sum of its proper divisors (31302535219).

664860488141 is a wasteful number, since it uses less digits than its factorization.

664860488141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35716.

The product of its (nonzero) digits is 7077888, while the sum is 56.

The spelling of 664860488141 in words is "six hundred sixty-four billion, eight hundred sixty million, four hundred eighty-eight thousand, one hundred forty-one".