66110502540233 has 16 divisors (see below), whose sum is σ = 66250512054672. Its totient is φ = 65970650880000.

The previous prime is 66110502540211. The next prime is 66110502540239. The reversal of 66110502540233 is 33204520501166.

It can be written as a sum of positive squares in 8 ways, for example, as 9166167994624 + 56944334545609 = 3027568^2 + 7546147^2 .

It is a cyclic number.

It is not a de Polignac number, because 66110502540233 - 2³⁰ = 66109428798409 is a prime.

It is a super-4 number, since 4×66110502540233⁴ (a number of 56 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66110502540239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8160778883 + ... + 8160786983.

It is an arithmetic number, because the mean of its divisors is an integer number (4140657003417).

Almost surely, 2^{66110502540233} is an apocalyptic number.

It is an amenable number.

66110502540233 is a deficient number, since it is larger than the sum of its proper divisors (140009514439).

66110502540233 is a wasteful number, since it uses less digits than its factorization.

66110502540233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15836.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 66110502540233 in words is "sixty-six trillion, one hundred ten billion, five hundred two million, five hundred forty thousand, two hundred thirty-three".