28061101465 has 16 divisors (see below), whose sum is σ = 34463138688. Its totient is φ = 21922540416.

The previous prime is 28061101457. The next prime is 28061101507. The reversal of 28061101465 is 56410116082.

It is a cyclic number.

It is not a de Polignac number, because 28061101465 - 2³ = 28061101457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28061101465.

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, 1523149 + ... + 1541461.

It is an arithmetic number, because the mean of its divisors is an integer number (2153946168).

Almost surely, 2^28061101465 is an apocalyptic number.

It is an amenable number.

28061101465 is a deficient number, since it is larger than the sum of its proper divisors (6402037223).

28061101465 is a wasteful number, since it uses less digits than its factorization.

28061101465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25488.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 28061101465 in words is "twenty-eight billion, sixty-one million, one hundred one thousand, four hundred sixty-five".