20372001243 has 32 divisors (see below), whose sum is σ = 29915308800. Its totient is φ = 12229032960.

The previous prime is 20372001241. The next prime is 20372001269. The reversal of 20372001243 is 34210027302.

It is not a de Polignac number, because 20372001243 - 2¹ = 20372001241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20372001241) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 2106483 + ... + 2116131.

It is an arithmetic number, because the mean of its divisors is an integer number (934853400).

Almost surely, 2^20372001243 is an apocalyptic number.

20372001243 is a deficient number, since it is larger than the sum of its proper divisors (9543307557).

20372001243 is a wasteful number, since it uses less digits than its factorization.

20372001243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10267.

The product of its (nonzero) digits is 2016, while the sum is 24.

Adding to 20372001243 its reverse (34210027302), we get a palindrome (54582028545).

The spelling of 20372001243 in words is "twenty billion, three hundred seventy-two million, one thousand, two hundred forty-three".