20469603535538 has 32 divisors (see below), whose sum is σ = 33109715701440. Its totient is φ = 9459355357440.

The previous prime is 20469603535531. The next prime is 20469603535543. The reversal of 20469603535538 is 83553530696402.

It is not an unprimeable number, because it can be changed into a prime (20469603535531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57620045 + ... + 57974207.

It is an arithmetic number, because the mean of its divisors is an integer number (1034678615670).

Almost surely, 2^{20469603535538} is an apocalyptic number.

20469603535538 is a deficient number, since it is larger than the sum of its proper divisors (12640112165902).

20469603535538 is a wasteful number, since it uses less digits than its factorization.

20469603535538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391322.

The product of its (nonzero) digits is 69984000, while the sum is 59.

The spelling of 20469603535538 in words is "twenty trillion, four hundred sixty-nine billion, six hundred three million, five hundred thirty-five thousand, five hundred thirty-eight".