20423832402 has 16 divisors (see below), whose sum is σ = 43250468832. Its totient is φ = 6407476800.

The previous prime is 20423832391. The next prime is 20423832433.

It is a happy number.

20423832402 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 20423832402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100116724 + ... + 100116927.

It is an arithmetic number, because the mean of its divisors is an integer number (2703154302).

Almost surely, 2^20423832402 is an apocalyptic number.

20423832402 is an abundant number, since it is smaller than the sum of its proper divisors (22826636430).

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

20423832402 is a wasteful number, since it uses less digits than its factorization.

20423832402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200233673.

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 20423832402 in words is "twenty billion, four hundred twenty-three million, eight hundred thirty-two thousand, four hundred two".