20400354435201 has 8 divisors (see below), whose sum is σ = 29292816624960. Its totient is φ = 12554064267792.

The previous prime is 20400354435199. The next prime is 20400354435229. The reversal of 20400354435201 is 10253445300402.

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

It is not a de Polignac number, because 20400354435201 - 2¹ = 20400354435199 is a prime.

It is a super-2 number, since 2×20400354435201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20400354430201) 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, 261543005541 + ... + 261543005618.

It is an arithmetic number, because the mean of its divisors is an integer number (3661602078120).

Almost surely, 2^{20400354435201} is an apocalyptic number.

It is an amenable number.

20400354435201 is a deficient number, since it is larger than the sum of its proper divisors (8892462189759).

20400354435201 is a wasteful number, since it uses less digits than its factorization.

20400354435201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523086011175.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 20400354435201 its reverse (10253445300402), we get a palindrome (30653799735603).

The spelling of 20400354435201 in words is "twenty trillion, four hundred billion, three hundred fifty-four million, four hundred thirty-five thousand, two hundred one".