66572671145 has 8 divisors (see below), whose sum is σ = 80034874440. Its totient is φ = 53159690880.

The previous prime is 66572671129. The next prime is 66572671157. The reversal of 66572671145 is 54117627566.

It can be written as a sum of positive squares in 4 ways, for example, as 2636514409 + 63936156736 = 51347^2 + 252856^2 .

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

It is not a de Polignac number, because 66572671145 - 2⁴ = 66572671129 is a prime.

It is a super-2 number, since 2×66572671145² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66572671093 and 66572671102.

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, 12302780 + ... + 12308189.

It is an arithmetic number, because the mean of its divisors is an integer number (10004359305).

Almost surely, 2^66572671145 is an apocalyptic number.

It is an amenable number.

66572671145 is a deficient number, since it is larger than the sum of its proper divisors (13462203295).

66572671145 is a wasteful number, since it uses less digits than its factorization.

66572671145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24611515.

The product of its digits is 2116800, while the sum is 50.

The spelling of 66572671145 in words is "sixty-six billion, five hundred seventy-two million, six hundred seventy-one thousand, one hundred forty-five".