15428213444609 has 16 divisors (see below), whose sum is σ = 17855652249600. Its totient is φ = 13056630756624.

The previous prime is 15428213444563. The next prime is 15428213444641. The reversal of 15428213444609 is 90644431282451.

It is not a de Polignac number, because 15428213444609 - 2²⁴ = 15428196667393 is a prime.

It is a super-2 number, since 2×15428213444609² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15428213044609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81793484 + ... + 81981890.

It is an arithmetic number, because the mean of its divisors is an integer number (1115978265600).

Almost surely, 2^{15428213444609} is an apocalyptic number.

It is an amenable number.

15428213444609 is a deficient number, since it is larger than the sum of its proper divisors (2427438804991).

15428213444609 is a wasteful number, since it uses less digits than its factorization.

15428213444609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336572.

The product of its (nonzero) digits is 6635520, while the sum is 53.

The spelling of 15428213444609 in words is "fifteen trillion, four hundred twenty-eight billion, two hundred thirteen million, four hundred forty-four thousand, six hundred nine".