28127040513 has 16 divisors (see below), whose sum is σ = 44059141056. Its totient is φ = 15735407040.

The previous prime is 28127040509. The next prime is 28127040517. The reversal of 28127040513 is 31504072182.

It is an interprime number because it is at equal distance from previous prime (28127040509) and next prime (28127040517).

It is not a de Polignac number, because 28127040513 - 2² = 28127040509 is a prime.

It is a super-2 number, since 2×28127040513² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (28127040517) 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, 32781670 + ... + 32782527.

It is an arithmetic number, because the mean of its divisors is an integer number (2753696316).

Almost surely, 2^28127040513 is an apocalyptic number.

It is an amenable number.

28127040513 is a deficient number, since it is larger than the sum of its proper divisors (15932100543).

28127040513 is a wasteful number, since it uses less digits than its factorization.

28127040513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65564224.

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 28127040513 in words is "twenty-eight billion, one hundred twenty-seven million, forty thousand, five hundred thirteen".