20401000146165 has 64 divisors (see below), whose sum is σ = 34679627329536. Its totient is φ = 10219373379072.

The previous prime is 20401000146061. The next prime is 20401000146187. The reversal of 20401000146165 is 56164100010402.

It is not a de Polignac number, because 20401000146165 - 2¹⁸ = 20400999884021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5825112 + ... + 8644878.

It is an arithmetic number, because the mean of its divisors is an integer number (541869177024).

Almost surely, 2^{20401000146165} is an apocalyptic number.

It is an amenable number.

20401000146165 is a deficient number, since it is larger than the sum of its proper divisors (14278627183371).

20401000146165 is a wasteful number, since it uses less digits than its factorization.

20401000146165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820178.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 20401000146165 its reverse (56164100010402), we get a palindrome (76565100156567).

The spelling of 20401000146165 in words is "twenty trillion, four hundred one billion, one hundred forty-six thousand, one hundred sixty-five".