65565055506501 has 12 divisors (see below), whose sum is σ = 99689558080320. Its totient is φ = 41409508740840.

The previous prime is 65565055506493. The next prime is 65565055506583. The reversal of 65565055506501 is 10560555056556.

It is not a de Polignac number, because 65565055506501 - 2³ = 65565055506493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65565055502501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191710688445 + ... + 191710688786.

It is an arithmetic number, because the mean of its divisors is an integer number (8307463173360).

Almost surely, 2^{65565055506501} is an apocalyptic number.

It is an amenable number.

65565055506501 is a deficient number, since it is larger than the sum of its proper divisors (34124502573819).

65565055506501 is a wasteful number, since it uses less digits than its factorization.

65565055506501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383421377256 (or 383421377253 counting only the distinct ones).

The product of its (nonzero) digits is 16875000, while the sum is 54.

The spelling of 65565055506501 in words is "sixty-five trillion, five hundred sixty-five billion, fifty-five million, five hundred six thousand, five hundred one".