28129170268936 has 32 divisors (see below), whose sum is σ = 59520971577600. Its totient is φ = 12345090399040.

The previous prime is 28129170268933. The next prime is 28129170268949. The reversal of 28129170268936 is 63986207192182.

It is not an unprimeable number, because it can be changed into a prime (28129170268933) 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, 5511198520 + ... + 5511203623.

It is an arithmetic number, because the mean of its divisors is an integer number (1860030361800).

Almost surely, 2^{28129170268936} is an apocalyptic number.

It is an amenable number.

28129170268936 is an abundant number, since it is smaller than the sum of its proper divisors (31391801308664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28129170268936 is a wasteful number, since it uses less digits than its factorization.

28129170268936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11022402189 (or 11022402185 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 28129170268936 in words is "twenty-eight trillion, one hundred twenty-nine billion, one hundred seventy million, two hundred sixty-eight thousand, nine hundred thirty-six".