20351344352 has 12 divisors (see below), whose sum is σ = 40066709256. Its totient is φ = 10175672160.

The previous prime is 20351344333. The next prime is 20351344361. The reversal of 20351344352 is 25344315302.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 635979511 = 20351344352 / (2 + 0 + 3 + 5 + 1 + 3 + 4 + 4 + 3 + 5 + 2).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 317989724 + ... + 317989787.

It is an arithmetic number, because the mean of its divisors is an integer number (3338892438).

Almost surely, 2^20351344352 is an apocalyptic number.

It is an amenable number.

20351344352 is a deficient number, since it is larger than the sum of its proper divisors (19715364904).

20351344352 is an equidigital number, since it uses as much as digits as its factorization.

20351344352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635979521 (or 635979513 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 20351344352 its reverse (25344315302), we get a palindrome (45695659654).

The spelling of 20351344352 in words is "twenty billion, three hundred fifty-one million, three hundred forty-four thousand, three hundred fifty-two".