66102545045 has 8 divisors (see below), whose sum is σ = 82058331960. Its totient is φ = 51058517440.

The previous prime is 66102545039. The next prime is 66102545059. The reversal of 66102545045 is 54054520166.

It can be written as a sum of positive squares in 4 ways, for example, as 28442485201 + 37660059844 = 168649^2 + 194062^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66102545045 - 2⁴ = 66102545029 is a prime.

It is a super-2 number, since 2×66102545045² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227939666 + ... + 227939955.

It is an arithmetic number, because the mean of its divisors is an integer number (10257291495).

Almost surely, 2^66102545045 is an apocalyptic number.

It is an amenable number.

66102545045 is a deficient number, since it is larger than the sum of its proper divisors (15955786915).

66102545045 is a wasteful number, since it uses less digits than its factorization.

66102545045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455879655.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 66102545045 in words is "sixty-six billion, one hundred two million, five hundred forty-five thousand, forty-five".