20455511541231 has 32 divisors (see below), whose sum is σ = 30554592768000. Its totient is φ = 12086038677888.

The previous prime is 20455511541181. The next prime is 20455511541239. The reversal of 20455511541231 is 13214511555402.

It is a de Polignac number, because none of the positive numbers 2^k-20455511541231 is a prime.

It is a super-2 number, since 2×20455511541231² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 20455511541231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20455511541239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50317711 + ... + 50722608.

It is an arithmetic number, because the mean of its divisors is an integer number (954831024000).

Almost surely, 2^{20455511541231} is an apocalyptic number.

20455511541231 is a deficient number, since it is larger than the sum of its proper divisors (10099081226769).

20455511541231 is a wasteful number, since it uses less digits than its factorization.

20455511541231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101040543.

The product of its (nonzero) digits is 120000, while the sum is 39.

The spelling of 20455511541231 in words is "twenty trillion, four hundred fifty-five billion, five hundred eleven million, five hundred forty-one thousand, two hundred thirty-one".