20554520542045 has 16 divisors (see below), whose sum is σ = 28189629157248. Its totient is φ = 14094242164800.

The previous prime is 20554520541949. The next prime is 20554520542051. The reversal of 20554520542045 is 54024502545502.

It is not a de Polignac number, because 20554520542045 - 2¹¹ = 20554520539997 is a prime.

It is a super-2 number, since 2×20554520542045² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20554520541992 and 20554520542010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4207134 + ... + 7668703.

It is an arithmetic number, because the mean of its divisors is an integer number (1761851822328).

Almost surely, 2^{20554520542045} is an apocalyptic number.

It is an amenable number.

20554520542045 is a deficient number, since it is larger than the sum of its proper divisors (7635108615203).

20554520542045 is a wasteful number, since it uses less digits than its factorization.

20554520542045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11925300.

The product of its (nonzero) digits is 1600000, while the sum is 43.

The spelling of 20554520542045 in words is "twenty trillion, five hundred fifty-four billion, five hundred twenty million, five hundred forty-two thousand, forty-five".