15428132173 has 32 divisors (see below), whose sum is σ = 16431134720. Its totient is φ = 14467092480.

The previous prime is 15428132147. The next prime is 15428132177. The reversal of 15428132173 is 37123182451.

It is a cyclic number.

It is not a de Polignac number, because 15428132173 - 2⁹ = 15428131661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15428132177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33759361 + ... + 33759817.

It is an arithmetic number, because the mean of its divisors is an integer number (513472960).

Almost surely, 2^15428132173 is an apocalyptic number.

It is an amenable number.

15428132173 is a deficient number, since it is larger than the sum of its proper divisors (1003002547).

15428132173 is a wasteful number, since it uses less digits than its factorization.

15428132173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797.

The product of its digits is 40320, while the sum is 37.

The spelling of 15428132173 in words is "fifteen billion, four hundred twenty-eight million, one hundred thirty-two thousand, one hundred seventy-three".