66235405313 has 32 divisors (see below), whose sum is σ = 87455877120. Its totient is φ = 48631080960.

The previous prime is 66235405283. The next prime is 66235405319. The reversal of 66235405313 is 31350453266.

It is not a de Polignac number, because 66235405313 - 2¹² = 66235401217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66235405319) 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, 160448 + ... + 397761.

It is an arithmetic number, because the mean of its divisors is an integer number (2732996160).

Almost surely, 2^66235405313 is an apocalyptic number.

It is an amenable number.

66235405313 is a deficient number, since it is larger than the sum of its proper divisors (21220471807).

66235405313 is a wasteful number, since it uses less digits than its factorization.

66235405313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558317.

The product of its (nonzero) digits is 194400, while the sum is 38.

Adding to 66235405313 its reverse (31350453266), we get a palindrome (97585858579).

The spelling of 66235405313 in words is "sixty-six billion, two hundred thirty-five million, four hundred five thousand, three hundred thirteen".