20602166001 has 8 divisors (see below), whose sum is σ = 27476217600. Its totient is φ = 13731445872.

The previous prime is 20602165999. The next prime is 20602166017. The reversal of 20602166001 is 10066120602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20602166001 - 2¹ = 20602165999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20602166021) 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, 818401 + ... + 843198.

It is an arithmetic number, because the mean of its divisors is an integer number (3434527200).

Almost surely, 2^20602166001 is an apocalyptic number.

It is an amenable number.

20602166001 is a deficient number, since it is larger than the sum of its proper divisors (6874051599).

20602166001 is a wasteful number, since it uses less digits than its factorization.

20602166001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665735.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 20602166001 its reverse (10066120602), we get a palindrome (30668286603).

The spelling of 20602166001 in words is "twenty billion, six hundred two million, one hundred sixty-six thousand, one".