164559643730 has 32 divisors (see below), whose sum is σ = 299838768768. Its totient is φ = 65017209600.

The previous prime is 164559643687. The next prime is 164559643733. The reversal of 164559643730 is 37346955461.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164559643733) 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, 4564475 + ... + 4600385.

It is an arithmetic number, because the mean of its divisors is an integer number (9369961524).

Almost surely, 2^164559643730 is an apocalyptic number.

164559643730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164559643730 is a deficient number, since it is larger than the sum of its proper divisors (135279125038).

164559643730 is a wasteful number, since it uses less digits than its factorization.

164559643730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41522.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The spelling of 164559643730 in words is "one hundred sixty-four billion, five hundred fifty-nine million, six hundred forty-three thousand, seven hundred thirty".