28363145071 has 4 divisors (see below), whose sum is σ = 29855942200. Its totient is φ = 26870347944.

The previous prime is 28363145059. The next prime is 28363145081. The reversal of 28363145071 is 17054136382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28363145071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28363145011) 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, 746398536 + ... + 746398573.

It is an arithmetic number, because the mean of its divisors is an integer number (7463985550).

Almost surely, 2^28363145071 is an apocalyptic number.

28363145071 is a deficient number, since it is larger than the sum of its proper divisors (1492797129).

28363145071 is a wasteful number, since it uses less digits than its factorization.

28363145071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492797128.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 28363145071 in words is "twenty-eight billion, three hundred sixty-three million, one hundred forty-five thousand, seventy-one".