28694753139 has 16 divisors (see below), whose sum is σ = 41206565792. Its totient is φ = 17656662528.

The previous prime is 28694753137. The next prime is 28694753159. The reversal of 28694753139 is 93135749682.

It is not a de Polignac number, because 28694753139 - 2¹ = 28694753137 is a prime.

It is a super-4 number, since 4×28694753139⁴ (a number of 43 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28694753137) 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, 490917 + ... + 546249.

It is an arithmetic number, because the mean of its divisors is an integer number (2575410362).

Almost surely, 2^28694753139 is an apocalyptic number.

28694753139 is a deficient number, since it is larger than the sum of its proper divisors (12511812653).

28694753139 is a wasteful number, since it uses less digits than its factorization.

28694753139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68646.

The product of its digits is 9797760, while the sum is 57.

The spelling of 28694753139 in words is "twenty-eight billion, six hundred ninety-four million, seven hundred fifty-three thousand, one hundred thirty-nine".