66030005505505 has 4 divisors (see below), whose sum is σ = 79236006606612. Its totient is φ = 52824004404400.

The previous prime is 66030005505479. The next prime is 66030005505517. The reversal of 66030005505505 is 50550550003066.

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 31709951683281 + 34320053822224 = 5631159^2 + 5858332^2 .

It is not a de Polignac number, because 66030005505505 - 2²⁹ = 66029468634593 is a prime.

It is a super-2 number, since 2×66030005505505² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6603000550546 + ... + 6603000550555.

It is an arithmetic number, because the mean of its divisors is an integer number (19809001651653).

Almost surely, 2^{66030005505505} is an apocalyptic number.

It is an amenable number.

66030005505505 is a deficient number, since it is larger than the sum of its proper divisors (13206001101107).

66030005505505 is a wasteful number, since it uses less digits than its factorization.

66030005505505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13206001101106.

The product of its (nonzero) digits is 337500, while the sum is 40.

The spelling of 66030005505505 in words is "sixty-six trillion, thirty billion, five million, five hundred five thousand, five hundred five".