66020206353724 has 36 divisors (see below), whose sum is σ = 138030663106056. Its totient is φ = 27529661333664.

The previous prime is 66020206353697. The next prime is 66020206353727. The reversal of 66020206353724 is 42735360202066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66020206353727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4551854742 + ... + 4551869245.

Almost surely, 2^{66020206353724} is an apocalyptic number.

It is an amenable number.

66020206353724 is an abundant number, since it is smaller than the sum of its proper divisors (72010456752332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66020206353724 is a wasteful number, since it uses less digits than its factorization.

66020206353724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9103724042 (or 9103724033 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 46.

The spelling of 66020206353724 in words is "sixty-six trillion, twenty billion, two hundred six million, three hundred fifty-three thousand, seven hundred twenty-four".