20401000146164 has 12 divisors (see below), whose sum is σ = 38947363915488. Its totient is φ = 9273181884600.

The previous prime is 20401000146061. The next prime is 20401000146187. The reversal of 20401000146164 is 46164100010402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231829547072 + ... + 231829547159.

It is an arithmetic number, because the mean of its divisors is an integer number (3245613659624).

Almost surely, 2^{20401000146164} is an apocalyptic number.

It is an amenable number.

20401000146164 is a deficient number, since it is larger than the sum of its proper divisors (18546363769324).

20401000146164 is a wasteful number, since it uses less digits than its factorization.

20401000146164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463659094246 (or 463659094244 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 20401000146164 its reverse (46164100010402), we get a palindrome (66565100156566).

The spelling of 20401000146164 in words is "twenty trillion, four hundred one billion, one hundred forty-six thousand, one hundred sixty-four".