20164405601 has 8 divisors (see below), whose sum is σ = 21080906880. Its totient is φ = 19287680676.

The previous prime is 20164405589. The next prime is 20164405609. The reversal of 20164405601 is 10650446102.

It is not a de Polignac number, because 20164405601 - 2¹⁰ = 20164404577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20164405609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816485 + ... + 840818.

It is an arithmetic number, because the mean of its divisors is an integer number (2635113360).

Almost surely, 2^20164405601 is an apocalyptic number.

It is an amenable number.

20164405601 is a deficient number, since it is larger than the sum of its proper divisors (916501279).

20164405601 is an frugal number, since it uses more digits than its factorization.

20164405601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657372 (or 1657326 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 20164405601 in words is "twenty billion, one hundred sixty-four million, four hundred five thousand, six hundred one".