20045641602 has 16 divisors (see below), whose sum is σ = 45818609472. Its totient is φ = 5727326160.

The previous prime is 20045641601. The next prime is 20045641607. The reversal of 20045641602 is 20614654002.

It is a self number, because there is not a number n which added to its sum of digits gives 20045641602.

It is not an unprimeable number, because it can be changed into a prime (20045641601) 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, 238638549 + ... + 238638632.

It is an arithmetic number, because the mean of its divisors is an integer number (2863663092).

Almost surely, 2^20045641602 is an apocalyptic number.

20045641602 is an abundant number, since it is smaller than the sum of its proper divisors (25772967870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20045641602 is a wasteful number, since it uses less digits than its factorization.

20045641602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477277193.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 20045641602 in words is "twenty billion, forty-five million, six hundred forty-one thousand, six hundred two".