20005542045 has 24 divisors (see below), whose sum is σ = 34680462336. Its totient is φ = 10668333408.

The previous prime is 20005542043. The next prime is 20005542061. The reversal of 20005542045 is 54024550002.

It is not a de Polignac number, because 20005542045 - 2¹ = 20005542043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005542043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 438292 + ... + 481778.

It is an arithmetic number, because the mean of its divisors is an integer number (1445019264).

Almost surely, 2^20005542045 is an apocalyptic number.

It is an amenable number.

20005542045 is a deficient number, since it is larger than the sum of its proper divisors (14674920291).

20005542045 is a wasteful number, since it uses less digits than its factorization.

20005542045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53721 (or 53718 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The spelling of 20005542045 in words is "twenty billion, five million, five hundred forty-two thousand, forty-five".