66240415522306 has 4 divisors (see below), whose sum is σ = 99360623283462. Its totient is φ = 33120207761152.

The previous prime is 66240415522297. The next prime is 66240415522313. The reversal of 66240415522306 is 60322551404266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 65535646877281 + 704768645025 = 8095409^2 + 839505^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16560103880575 + ... + 16560103880578.

Almost surely, 2^{66240415522306} is an apocalyptic number.

66240415522306 is a deficient number, since it is larger than the sum of its proper divisors (33120207761156).

66240415522306 is a wasteful number, since it uses less digits than its factorization.

66240415522306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33120207761155.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 66240415522306 in words is "sixty-six trillion, two hundred forty billion, four hundred fifteen million, five hundred twenty-two thousand, three hundred six".