15421202020312 has 32 divisors (see below), whose sum is σ = 31975468710480. Its totient is φ = 6913614850560.

The previous prime is 15421202020261. The next prime is 15421202020331. The reversal of 15421202020312 is 21302020212451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200273933 + ... + 1200286780.

Almost surely, 2^{15421202020312} is an apocalyptic number.

It is an amenable number.

15421202020312 is an abundant number, since it is smaller than the sum of its proper divisors (16554266690168).

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

15421202020312 is a wasteful number, since it uses less digits than its factorization.

15421202020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400560803 (or 2400560799 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 15421202020312 its reverse (21302020212451), we get a palindrome (36723222232763).

The spelling of 15421202020312 in words is "fifteen trillion, four hundred twenty-one billion, two hundred two million, twenty thousand, three hundred twelve".