28477135729 has 16 divisors (see below), whose sum is σ = 33465764608. Its totient is φ = 23720236992.

The previous prime is 28477135721. The next prime is 28477135741. The reversal of 28477135729 is 92753177482.

It is a cyclic number.

It is not a de Polignac number, because 28477135729 - 2³ = 28477135721 is a prime.

It is a super-2 number, since 2×28477135729² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28477135729.

It is not an unprimeable number, because it can be changed into a prime (28477135721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146359 + ... + 279955.

It is an arithmetic number, because the mean of its divisors is an integer number (2091610288).

Almost surely, 2^28477135729 is an apocalyptic number.

It is an amenable number.

28477135729 is a deficient number, since it is larger than the sum of its proper divisors (4988628879).

28477135729 is a wasteful number, since it uses less digits than its factorization.

28477135729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134464.

The product of its digits is 5927040, while the sum is 55.

The spelling of 28477135729 in words is "twenty-eight billion, four hundred seventy-seven million, one hundred thirty-five thousand, seven hundred twenty-nine".