561664140002133 has 64 divisors (see below), whose sum is σ = 917397661888512. Its totient is φ = 298345823124480.

The previous prime is 561664140002129. The next prime is 561664140002137. The reversal of 561664140002133 is 331200041466165.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (561664140002129) and next prime (561664140002137).

It is not a de Polignac number, because 561664140002133 - 2² = 561664140002129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561664140002137) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 99875323 + ... + 105348983.

It is an arithmetic number, because the mean of its divisors is an integer number (14334338467008).

Almost surely, 2^{561664140002133} is an apocalyptic number.

It is an amenable number.

561664140002133 is a deficient number, since it is larger than the sum of its proper divisors (355733521886379).

561664140002133 is a wasteful number, since it uses less digits than its factorization.

561664140002133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5477234.

The product of its (nonzero) digits is 311040, while the sum is 42.

Adding to 561664140002133 its reverse (331200041466165), we get a palindrome (892864181468298).

The spelling of 561664140002133 in words is "five hundred sixty-one trillion, six hundred sixty-four billion, one hundred forty million, two thousand, one hundred thirty-three".