28054015065 has 80 divisors (see below), whose sum is σ = 51934555200. Its totient is φ = 14479129728.

The previous prime is 28054015061. The next prime is 28054015123. The reversal of 28054015065 is 56051045082.

28054015065 is a `hidden beast` number, since 2 + 8 + 0 + 540 + 1 + 50 + 65 = 666.

It is not a de Polignac number, because 28054015065 - 2² = 28054015061 is a prime.

It is a super-2 number, since 2×28054015065² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28054015061) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1890846 + ... + 1905624.

It is an arithmetic number, because the mean of its divisors is an integer number (649181940).

Almost surely, 2^28054015065 is an apocalyptic number.

It is an amenable number.

28054015065 is a deficient number, since it is larger than the sum of its proper divisors (23880540135).

28054015065 is a wasteful number, since it uses less digits than its factorization.

28054015065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14948 (or 14939 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 28054015065 in words is "twenty-eight billion, fifty-four million, fifteen thousand, sixty-five".