55665615066 has 32 divisors (see below), whose sum is σ = 117358113600. Its totient is φ = 17553513600.

The previous prime is 55665615017. The next prime is 55665615067. The reversal of 55665615066 is 66051656655.

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 15 ways as a sum of consecutive naturals, for example, 268371 + ... + 428198.

It is an arithmetic number, because the mean of its divisors is an integer number (3667441050).

Almost surely, 2^55665615066 is an apocalyptic number.

55665615066 is an abundant number, since it is smaller than the sum of its proper divisors (61692498534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55665615066 is a wasteful number, since it uses less digits than its factorization.

55665615066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697294.

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 55665615066 in words is "fifty-five billion, six hundred sixty-five million, six hundred fifteen thousand, sixty-six".