20312455306133 has 4 divisors (see below), whose sum is σ = 20434086775200. Its totient is φ = 20190823837068.

The previous prime is 20312455306109. The next prime is 20312455306139. The reversal of 20312455306133 is 33160355421302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20312455306133 - 2¹⁸ = 20312455043989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312455306139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60815734283 + ... + 60815734616.

It is an arithmetic number, because the mean of its divisors is an integer number (5108521693800).

Almost surely, 2^{20312455306133} is an apocalyptic number.

It is an amenable number.

20312455306133 is a deficient number, since it is larger than the sum of its proper divisors (121631469067).

20312455306133 is a wasteful number, since it uses less digits than its factorization.

20312455306133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121631469066.

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

The spelling of 20312455306133 in words is "twenty trillion, three hundred twelve billion, four hundred fifty-five million, three hundred six thousand, one hundred thirty-three".