20544342351 has 32 divisors (see below), whose sum is σ = 30818199552. Its totient is φ = 12087377280.

The previous prime is 20544342341. The next prime is 20544342391. The reversal of 20544342351 is 15324344502.

It is not a de Polignac number, because 20544342351 - 2¹¹ = 20544340303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20544342341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2020 + ... + 202713.

It is an arithmetic number, because the mean of its divisors is an integer number (963068736).

Almost surely, 2^20544342351 is an apocalyptic number.

20544342351 is a deficient number, since it is larger than the sum of its proper divisors (10273857201).

20544342351 is a wasteful number, since it uses less digits than its factorization.

20544342351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204863.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 20544342351 its reverse (15324344502), we get a palindrome (35868686853).

The spelling of 20544342351 in words is "twenty billion, five hundred forty-four million, three hundred forty-two thousand, three hundred fifty-one".