28117507701 has 16 divisors (see below), whose sum is σ = 37986713600. Its totient is φ = 18496930608.

The previous prime is 28117507681. The next prime is 28117507703. The reversal of 28117507701 is 10770571182.

It is not a de Polignac number, because 28117507701 - 2⁵ = 28117507669 is a prime.

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 28117507701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28117507703) 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, 383160 + ... + 450606.

It is an arithmetic number, because the mean of its divisors is an integer number (2374169600).

Almost surely, 2^28117507701 is an apocalyptic number.

It is an amenable number.

28117507701 is a deficient number, since it is larger than the sum of its proper divisors (9869205899).

28117507701 is a wasteful number, since it uses less digits than its factorization.

28117507701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69288.

The product of its (nonzero) digits is 27440, while the sum is 39.

The spelling of 28117507701 in words is "twenty-eight billion, one hundred seventeen million, five hundred seven thousand, seven hundred one".