28171543015 has 32 divisors (see below), whose sum is σ = 42184774656. Its totient is φ = 17545973760.

The previous prime is 28171542989. The next prime is 28171543027. The reversal of 28171543015 is 51034517182.

It is not a de Polignac number, because 28171543015 - 2⁵ = 28171542983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412174 + ... + 475636.

It is an arithmetic number, because the mean of its divisors is an integer number (1318274208).

Almost surely, 2^28171543015 is an apocalyptic number.

28171543015 is a deficient number, since it is larger than the sum of its proper divisors (14013231641).

28171543015 is a wasteful number, since it uses less digits than its factorization.

28171543015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64639.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 28171543015 in words is "twenty-eight billion, one hundred seventy-one million, five hundred forty-three thousand, fifteen".