21401400414433 has 8 divisors (see below), whose sum is σ = 23048483134376. Its totient is φ = 19754435001600.

The previous prime is 21401400414403. The next prime is 21401400414467. The reversal of 21401400414433 is 33441400410412.

It can be written as a sum of positive squares in 4 ways, for example, as 499972025569 + 20901428388864 = 707087^2 + 4571808^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-21401400414433 is a prime.

It is a super-2 number, since 2×21401400414433² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21401400414395 and 21401400414404.

It is not an unprimeable number, because it can be changed into a prime (21401400414403) 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, 28947678 + ... + 29677783.

It is an arithmetic number, because the mean of its divisors is an integer number (2881060391797).

Almost surely, 2^{21401400414433} is an apocalyptic number.

It is an amenable number.

21401400414433 is a deficient number, since it is larger than the sum of its proper divisors (1647082719943).

21401400414433 is a wasteful number, since it uses less digits than its factorization.

21401400414433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58653555.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 21401400414433 its reverse (33441400410412), we get a palindrome (54842800824845).

The spelling of 21401400414433 in words is "twenty-one trillion, four hundred one billion, four hundred million, four hundred fourteen thousand, four hundred thirty-three".