20554044415513 has 16 divisors (see below), whose sum is σ = 24321346416640. Its totient is φ = 16997928829200.

The previous prime is 20554044415501. The next prime is 20554044415523. The reversal of 20554044415513 is 31551444045502.

It is a cyclic number.

It is not a de Polignac number, because 20554044415513 - 2³³ = 20545454480921 is a prime.

It is a super-2 number, since 2×20554044415513² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20554044415513.

It is not an unprimeable number, because it can be changed into a prime (20554044415523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143008383 + ... + 143152036.

It is an arithmetic number, because the mean of its divisors is an integer number (1520084151040).

Almost surely, 2^{20554044415513} is an apocalyptic number.

It is an amenable number.

20554044415513 is a deficient number, since it is larger than the sum of its proper divisors (3767302001127).

20554044415513 is a wasteful number, since it uses less digits than its factorization.

20554044415513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286160788.

The product of its (nonzero) digits is 960000, while the sum is 43.

The spelling of 20554044415513 in words is "twenty trillion, five hundred fifty-four billion, forty-four million, four hundred fifteen thousand, five hundred thirteen".