164560899545 has 24 divisors (see below), whose sum is σ = 234601121664. Its totient is φ = 110440863456.

The previous prime is 164560899499. The next prime is 164560899553. The reversal of 164560899545 is 545998065461.

It is not a de Polignac number, because 164560899545 - 2³⁰ = 163487157721 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7133987 + ... + 7157016.

It is an arithmetic number, because the mean of its divisors is an integer number (9775046736).

Almost surely, 2^164560899545 is an apocalyptic number.

It is an amenable number.

164560899545 is a deficient number, since it is larger than the sum of its proper divisors (70040222119).

164560899545 is a wasteful number, since it uses less digits than its factorization.

164560899545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14291069 (or 14291062 counting only the distinct ones).

The product of its (nonzero) digits is 46656000, while the sum is 62.

The spelling of 164560899545 in words is "one hundred sixty-four billion, five hundred sixty million, eight hundred ninety-nine thousand, five hundred forty-five".