201401400020 has 12 divisors (see below), whose sum is σ = 422942940084. Its totient is φ = 80560560000.

The previous prime is 201401400001. The next prime is 201401400047. The reversal of 201401400020 is 20004104102.

It can be written as a sum of positive squares in 2 ways, for example, as 143068523536 + 58332876484 = 378244^2 + 241522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201401399968 and 201401400004.

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, 5035034981 + ... + 5035035020.

It is an arithmetic number, because the mean of its divisors is an integer number (35245245007).

Almost surely, 2^201401400020 is an apocalyptic number.

201401400020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201401400020 is an abundant number, since it is smaller than the sum of its proper divisors (221541540064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201401400020 is a wasteful number, since it uses less digits than its factorization.

201401400020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10070070010 (or 10070070008 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 201401400020 its reverse (20004104102), we get a palindrome (221405504122).

The spelling of 201401400020 in words is "two hundred one billion, four hundred one million, four hundred thousand, twenty".