20344205022402 has 128 divisors (see below), whose sum is σ = 45047400652800. Its totient is φ = 6100103692800.

The previous prime is 20344205022367. The next prime is 20344205022443. The reversal of 20344205022402 is 20422050244302.

It is a super-2 number, since 2×20344205022402² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20344205022402.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 108537988 + ... + 108725264.

It is an arithmetic number, because the mean of its divisors is an integer number (351932817600).

Almost surely, 2^{20344205022402} is an apocalyptic number.

20344205022402 is an abundant number, since it is smaller than the sum of its proper divisors (24703195630398).

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

20344205022402 is a wasteful number, since it uses less digits than its factorization.

20344205022402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187912.

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 20344205022402 its reverse (20422050244302), we get a palindrome (40766255266704).

The spelling of 20344205022402 in words is "twenty trillion, three hundred forty-four billion, two hundred five million, twenty-two thousand, four hundred two".