20130413405444 has 6 divisors (see below), whose sum is σ = 35228223459534. Its totient is φ = 10065206702720.

The previous prime is 20130413405441. The next prime is 20130413405521. The reversal of 20130413405444 is 44450431403102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17704638305344 + 2425775100100 = 4207688^2 + 1557490^2 .

It is a super-2 number, since 2×20130413405444² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20130413405441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2516301675677 + ... + 2516301675684.

It is an arithmetic number, because the mean of its divisors is an integer number (5871370576589).

Almost surely, 2^{20130413405444} is an apocalyptic number.

It is an amenable number.

20130413405444 is a deficient number, since it is larger than the sum of its proper divisors (15097810054090).

20130413405444 is a wasteful number, since it uses less digits than its factorization.

20130413405444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5032603351365 (or 5032603351363 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 20130413405444 its reverse (44450431403102), we get a palindrome (64580844808546).

The spelling of 20130413405444 in words is "twenty trillion, one hundred thirty billion, four hundred thirteen million, four hundred five thousand, four hundred forty-four".