15426043221 has 8 divisors (see below), whose sum is σ = 20568976704. Its totient is φ = 10283569280.

The previous prime is 15426043187. The next prime is 15426043261. The reversal of 15426043221 is 12234062451.

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

It is a cyclic number.

It is not a de Polignac number, because 15426043221 - 2¹¹ = 15426041173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15426043261) 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, 26940 + ... + 177701.

It is an arithmetic number, because the mean of its divisors is an integer number (2571122088).

Almost surely, 2^15426043221 is an apocalyptic number.

It is an amenable number.

15426043221 is a deficient number, since it is larger than the sum of its proper divisors (5142933483).

15426043221 is a wasteful number, since it uses less digits than its factorization.

15426043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229771.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 15426043221 in words is "fifteen billion, four hundred twenty-six million, forty-three thousand, two hundred twenty-one".