28037285565 has 16 divisors (see below), whose sum is σ = 45474174528. Its totient is φ = 14748379776.

The previous prime is 28037285539. The next prime is 28037285593. The reversal of 28037285565 is 56558273082.

It is not a de Polignac number, because 28037285565 - 2¹² = 28037281469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12801319 + ... + 12803508.

It is an arithmetic number, because the mean of its divisors is an integer number (2842135908).

Almost surely, 2^28037285565 is an apocalyptic number.

It is an amenable number.

28037285565 is a deficient number, since it is larger than the sum of its proper divisors (17436888963).

28037285565 is a wasteful number, since it uses less digits than its factorization.

28037285565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25604908.

The product of its (nonzero) digits is 4032000, while the sum is 51.

The spelling of 28037285565 in words is "twenty-eight billion, thirty-seven million, two hundred eighty-five thousand, five hundred sixty-five".