20043521540102 has 4 divisors (see below), whose sum is σ = 30065282310156. Its totient is φ = 10021760770050.

The previous prime is 20043521540089. The next prime is 20043521540129. The reversal of 20043521540102 is 20104512534002.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010880385024 + ... + 5010880385027.

It is an arithmetic number, because the mean of its divisors is an integer number (7516320577539).

Almost surely, 2^{20043521540102} is an apocalyptic number.

20043521540102 is a deficient number, since it is larger than the sum of its proper divisors (10021760770054).

20043521540102 is a wasteful number, since it uses less digits than its factorization.

20043521540102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10021760770053.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 20043521540102 in words is "twenty trillion, forty-three billion, five hundred twenty-one million, five hundred forty thousand, one hundred two".