66205600355 has 16 divisors (see below), whose sum is σ = 79611573600. Its totient is φ = 52854676992.

The previous prime is 66205600333. The next prime is 66205600367. The reversal of 66205600355 is 55300650266.

66205600355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 66205600355 - 2⁸ = 66205600099 is a prime.

It is a super-2 number, since 2×66205600355² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6856571 + ... + 6866219.

It is an arithmetic number, because the mean of its divisors is an integer number (4975723350).

Almost surely, 2^66205600355 is an apocalyptic number.

66205600355 is a deficient number, since it is larger than the sum of its proper divisors (13405973245).

66205600355 is a wasteful number, since it uses less digits than its factorization.

66205600355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12358.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 66205600355 in words is "sixty-six billion, two hundred five million, six hundred thousand, three hundred fifty-five".