20401333401 has 8 divisors (see below), whose sum is σ = 27209473984. Its totient is φ = 13597040880.

The previous prime is 20401333373. The next prime is 20401333417. The reversal of 20401333401 is 10433310402.

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

It is not a de Polignac number, because 20401333401 - 2¹⁰ = 20401332377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20401333471) 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, 949621 + ... + 970866.

It is an arithmetic number, because the mean of its divisors is an integer number (3401184248).

Almost surely, 2^20401333401 is an apocalyptic number.

It is an amenable number.

20401333401 is a deficient number, since it is larger than the sum of its proper divisors (6808140583).

20401333401 is a wasteful number, since it uses less digits than its factorization.

20401333401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924031.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20401333401 its reverse (10433310402), we get a palindrome (30834643803).

The spelling of 20401333401 in words is "twenty billion, four hundred one million, three hundred thirty-three thousand, four hundred one".