20044535401 has 16 divisors (see below), whose sum is σ = 22303983168. Its totient is φ = 17860075200.

The previous prime is 20044535353. The next prime is 20044535429. The reversal of 20044535401 is 10453544002.

It is not a de Polignac number, because 20044535401 - 2⁹ = 20044534889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20044535401.

It is not an unprimeable number, because it can be changed into a prime (20044536401) 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, 137115 + ... + 242671.

It is an arithmetic number, because the mean of its divisors is an integer number (1393998948).

Almost surely, 2^20044535401 is an apocalyptic number.

It is an amenable number.

20044535401 is a deficient number, since it is larger than the sum of its proper divisors (2259447767).

20044535401 is a wasteful number, since it uses less digits than its factorization.

20044535401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105912.

The product of its (nonzero) digits is 9600, while the sum is 28.

The spelling of 20044535401 in words is "twenty billion, forty-four million, five hundred thirty-five thousand, four hundred one".