164263640416 has 24 divisors (see below), whose sum is σ = 323468540640. Its totient is φ = 82112899968.

The previous prime is 164263640399. The next prime is 164263640417. The reversal of 164263640416 is 614046362461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164263640417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449656 + ... + 728503.

It is an arithmetic number, because the mean of its divisors is an integer number (13477855860).

Almost surely, 2^164263640416 is an apocalyptic number.

164263640416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

164263640416 is a deficient number, since it is larger than the sum of its proper divisors (159204900224).

164263640416 is a wasteful number, since it uses less digits than its factorization.

164263640416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182526 (or 1182518 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 164263640416 in words is "one hundred sixty-four billion, two hundred sixty-three million, six hundred forty thousand, four hundred sixteen".