28560511387601 has 4 divisors (see below), whose sum is σ = 28560671849712. Its totient is φ = 28560350925492.

The previous prime is 28560511387567. The next prime is 28560511387649. The reversal of 28560511387601 is 10678311506582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28560511387601 - 2²² = 28560507193297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28560511387651) 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, 79963775 + ... + 80320148.

It is an arithmetic number, because the mean of its divisors is an integer number (7140167962428).

Almost surely, 2^{28560511387601} is an apocalyptic number.

It is an amenable number.

28560511387601 is a deficient number, since it is larger than the sum of its proper divisors (160462111).

28560511387601 is a wasteful number, since it uses less digits than its factorization.

28560511387601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160462110.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 28560511387601 in words is "twenty-eight trillion, five hundred sixty billion, five hundred eleven million, three hundred eighty-seven thousand, six hundred one".