66235503201 has 32 divisors (see below), whose sum is σ = 108950261760. Its totient is φ = 34954860864.

The previous prime is 66235503179. The next prime is 66235503211. The reversal of 66235503201 is 10230553266.

It is not a de Polignac number, because 66235503201 - 2⁷ = 66235503073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66235503211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2350365 + ... + 2378378.

It is an arithmetic number, because the mean of its divisors is an integer number (3404695680).

Almost surely, 2^66235503201 is an apocalyptic number.

It is an amenable number.

66235503201 is a deficient number, since it is larger than the sum of its proper divisors (42714758559).

66235503201 is a wasteful number, since it uses less digits than its factorization.

66235503201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728805.

The product of its (nonzero) digits is 32400, while the sum is 33.

The spelling of 66235503201 in words is "sixty-six billion, two hundred thirty-five million, five hundred three thousand, two hundred one".