487417025561 has 4 divisors (see below), whose sum is σ = 487421301300. Its totient is φ = 487412749824.

The previous prime is 487417025549. The next prime is 487417025569. The reversal of 487417025561 is 165520714784.

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

It can be written as a sum of positive squares in 2 ways, for example, as 207079603600 + 280337421961 = 455060^2 + 529469^2 .

It is a cyclic number.

It is not a de Polignac number, because 487417025561 - 2³⁴ = 470237156377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487417025569) 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, 1962056 + ... + 2196473.

It is an arithmetic number, because the mean of its divisors is an integer number (121855325325).

Almost surely, 2^487417025561 is an apocalyptic number.

It is an amenable number.

487417025561 is a deficient number, since it is larger than the sum of its proper divisors (4275739).

487417025561 is a wasteful number, since it uses less digits than its factorization.

487417025561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275738.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 487417025561 in words is "four hundred eighty-seven billion, four hundred seventeen million, twenty-five thousand, five hundred sixty-one".