20310404244402 has 16 divisors (see below), whose sum is σ = 40641088497120. Its totient is φ = 6766754746752.

The previous prime is 20310404244373. The next prime is 20310404244413. The reversal of 20310404244402 is 20444240401302.

It is a self number, because there is not a number n which added to its sum of digits gives 20310404244402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844987327 + ... + 845011362.

It is an arithmetic number, because the mean of its divisors is an integer number (2540068031070).

Almost surely, 2^{20310404244402} is an apocalyptic number.

20310404244402 is an abundant number, since it is smaller than the sum of its proper divisors (20330684252718).

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

20310404244402 is a wasteful number, since it uses less digits than its factorization.

20310404244402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690000697.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 20310404244402 its reverse (20444240401302), we get a palindrome (40754644645704).

The spelling of 20310404244402 in words is "twenty trillion, three hundred ten billion, four hundred four million, two hundred forty-four thousand, four hundred two".