28779011443 has 16 divisors (see below), whose sum is σ = 35426277376. Its totient is φ = 22766378400.

The previous prime is 28779011423. The next prime is 28779011461. The reversal of 28779011443 is 34411097782.

It is a cyclic number.

It is not a de Polignac number, because 28779011443 - 2¹³ = 28779003251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28779011393 and 28779011402.

It is not an unprimeable number, because it can be changed into a prime (28779011413) 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, 597718 + ... + 644068.

It is an arithmetic number, because the mean of its divisors is an integer number (2214142336).

Almost surely, 2^28779011443 is an apocalyptic number.

28779011443 is a deficient number, since it is larger than the sum of its proper divisors (6647265933).

28779011443 is a wasteful number, since it uses less digits than its factorization.

28779011443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53194.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 28779011443 in words is "twenty-eight billion, seven hundred seventy-nine million, eleven thousand, four hundred forty-three".