66060511651616 has 12 divisors (see below), whose sum is σ = 130056632314182. Its totient is φ = 33030255825792.

The previous prime is 66060511651591. The next prime is 66060511651633. The reversal of 66060511651616 is 61615611506066.

It can be written as a sum of positive squares in only one way, i.e., 38007175680016 + 28053335971600 = 6164996^2 + 5296540^2 .

It is a super-2 number, since 2×66060511651616² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032195494525 + ... + 1032195494588.

Almost surely, 2^{66060511651616} is an apocalyptic number.

It is an amenable number.

66060511651616 is a deficient number, since it is larger than the sum of its proper divisors (63996120662566).

66060511651616 is a wasteful number, since it uses less digits than its factorization.

66060511651616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064390989123 (or 2064390989115 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 66060511651616 in words is "sixty-six trillion, sixty billion, five hundred eleven million, six hundred fifty-one thousand, six hundred sixteen".