20356130433445 has 8 divisors (see below), whose sum is σ = 24427873314936. Its totient is φ = 16284559816896.

The previous prime is 20356130433413. The next prime is 20356130433511. The reversal of 20356130433445 is 54433403165302.

It can be written as a sum of positive squares in 4 ways, for example, as 4575008711329 + 15781121722116 = 2138927^2 + 3972546^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20356130433445 - 2⁵ = 20356130433413 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 42806122 + ... + 43279051.

It is an arithmetic number, because the mean of its divisors is an integer number (3053484164367).

Almost surely, 2^{20356130433445} is an apocalyptic number.

It is an amenable number.

20356130433445 is a deficient number, since it is larger than the sum of its proper divisors (4071742881491).

20356130433445 is an equidigital number, since it uses as much as digits as its factorization.

20356130433445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86132471.

The product of its (nonzero) digits is 1555200, while the sum is 43.

Adding to 20356130433445 its reverse (54433403165302), we get a palindrome (74789533598747).

The spelling of 20356130433445 in words is "twenty trillion, three hundred fifty-six billion, one hundred thirty million, four hundred thirty-three thousand, four hundred forty-five".