20045542403 has 8 divisors (see below), whose sum is σ = 20080915440. Its totient is φ = 20010201120.

The previous prime is 20045542379. The next prime is 20045542421. The reversal of 20045542403 is 30424554002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20045542403 - 2⁶ = 20045542339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20045542483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1496108 + ... + 1509446.

It is an arithmetic number, because the mean of its divisors is an integer number (2510114430).

Almost surely, 2^20045542403 is an apocalyptic number.

20045542403 is a deficient number, since it is larger than the sum of its proper divisors (35373037).

20045542403 is a wasteful number, since it uses less digits than its factorization.

20045542403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15877.

The product of its (nonzero) digits is 19200, while the sum is 29.

The spelling of 20045542403 in words is "twenty billion, forty-five million, five hundred forty-two thousand, four hundred three".