66652104123 has 40 divisors (see below), whose sum is σ = 109693820016. Its totient is φ = 39995208000.

The previous prime is 66652104091. The next prime is 66652104143. The reversal of 66652104123 is 32140125666.

It is not a de Polignac number, because 66652104123 - 2⁵ = 66652104091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66652104143) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 280336 + ... + 460317.

Almost surely, 2^66652104123 is an apocalyptic number.

66652104123 is a deficient number, since it is larger than the sum of its proper divisors (43041715893).

66652104123 is a wasteful number, since it uses less digits than its factorization.

66652104123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740777 (or 740768 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 66652104123 its reverse (32140125666), we get a palindrome (98792229789).

The spelling of 66652104123 in words is "sixty-six billion, six hundred fifty-two million, one hundred four thousand, one hundred twenty-three".