20045442503530 has 16 divisors (see below), whose sum is σ = 36081882851040. Its totient is φ = 8018157813712.

The previous prime is 20045442503519. The next prime is 20045442503563. The reversal of 20045442503530 is 3530524454002.

It is a self number, because there is not a number n which added to its sum of digits gives 20045442503530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2457441 + ... + 6791899.

It is an arithmetic number, because the mean of its divisors is an integer number (2255117678190).

Almost surely, 2^{20045442503530} is an apocalyptic number.

20045442503530 is a deficient number, since it is larger than the sum of its proper divisors (16036440347510).

20045442503530 is a wasteful number, since it uses less digits than its factorization.

20045442503530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4796933.

The product of its (nonzero) digits is 288000, while the sum is 37.

Adding to 20045442503530 its reverse (3530524454002), we get a palindrome (23575966957532).

The spelling of 20045442503530 in words is "twenty trillion, forty-five billion, four hundred forty-two million, five hundred three thousand, five hundred thirty".