15421402214205 has 128 divisors (see below), whose sum is σ = 28549408849920. Its totient is φ = 7050285204480.

The previous prime is 15421402214203. The next prime is 15421402214213. The reversal of 15421402214205 is 50241220412451.

It is not a de Polignac number, because 15421402214205 - 2¹ = 15421402214203 is a prime.

It is a super-3 number, since 3×15421402214205³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15421402214201) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28304872 + ... + 28844558.

It is an arithmetic number, because the mean of its divisors is an integer number (223042256640).

Almost surely, 2^{15421402214205} is an apocalyptic number.

15421402214205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15421402214205 is a deficient number, since it is larger than the sum of its proper divisors (13128006635715).

15421402214205 is a wasteful number, since it uses less digits than its factorization.

15421402214205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539931.

The product of its (nonzero) digits is 25600, while the sum is 33.

Adding to 15421402214205 its reverse (50241220412451), we get a palindrome (65662622626656).

The spelling of 15421402214205 in words is "fifteen trillion, four hundred twenty-one billion, four hundred two million, two hundred fourteen thousand, two hundred five".