55665615065 has 24 divisors (see below), whose sum is σ = 70985080320. Its totient is φ = 41897657088.

The previous prime is 55665615017. The next prime is 55665615067. The reversal of 55665615065 is 56051656655.

It is not a de Polignac number, because 55665615065 - 2²² = 55661420761 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55665615067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5397704 + ... + 5408006.

It is an arithmetic number, because the mean of its divisors is an integer number (2957711680).

Almost surely, 2^55665615065 is an apocalyptic number.

It is an amenable number.

55665615065 is a deficient number, since it is larger than the sum of its proper divisors (15319465255).

55665615065 is a wasteful number, since it uses less digits than its factorization.

55665615065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14081 (or 14064 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 55665615065 in words is "fifty-five billion, six hundred sixty-five million, six hundred fifteen thousand, sixty-five".