28813871363 has 4 divisors (see below), whose sum is σ = 29007253200. Its totient is φ = 28620489528.

The previous prime is 28813871347. The next prime is 28813871381. The reversal of 28813871363 is 36317831882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36317831882 = 2 ⋅18158915941.

It is a cyclic number.

It is not a de Polignac number, because 28813871363 - 2⁴ = 28813871347 is a prime.

It is a super-2 number, since 2×28813871363² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28813871263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96690695 + ... + 96690992.

It is an arithmetic number, because the mean of its divisors is an integer number (7251813300).

Almost surely, 2^28813871363 is an apocalyptic number.

28813871363 is a deficient number, since it is larger than the sum of its proper divisors (193381837).

28813871363 is a wasteful number, since it uses less digits than its factorization.

28813871363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193381836.

The product of its digits is 1161216, while the sum is 50.

The spelling of 28813871363 in words is "twenty-eight billion, eight hundred thirteen million, eight hundred seventy-one thousand, three hundred sixty-three".