20452431347 has 16 divisors (see below), whose sum is σ = 20700334080. Its totient is φ = 20206560000.

The previous prime is 20452431341. The next prime is 20452431359. The reversal of 20452431347 is 74313425402.

It is a cyclic number.

It is not a de Polignac number, because 20452431347 - 2⁴ = 20452431331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20452431341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27233222 + ... + 27233972.

It is an arithmetic number, because the mean of its divisors is an integer number (1293770880).

Almost surely, 2^20452431347 is an apocalyptic number.

20452431347 is a deficient number, since it is larger than the sum of its proper divisors (247902733).

20452431347 is a wasteful number, since it uses less digits than its factorization.

20452431347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714.

The product of its (nonzero) digits is 80640, while the sum is 35.

Adding to 20452431347 its reverse (74313425402), we get a palindrome (94765856749).

The spelling of 20452431347 in words is "twenty billion, four hundred fifty-two million, four hundred thirty-one thousand, three hundred forty-seven".