55665615064 has 8 divisors (see below), whose sum is σ = 104373028260. Its totient is φ = 27832807528.

The previous prime is 55665615017. The next prime is 55665615067. The reversal of 55665615064 is 46051656655.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 55665614999 and 55665615017.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3479100934 + ... + 3479100949.

Almost surely, 2^55665615064 is an apocalyptic number.

It is an amenable number.

55665615064 is a deficient number, since it is larger than the sum of its proper divisors (48707413196).

55665615064 is a wasteful number, since it uses less digits than its factorization.

55665615064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6958201889 (or 6958201885 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 49.

The spelling of 55665615064 in words is "fifty-five billion, six hundred sixty-five million, six hundred fifteen thousand, sixty-four".