20372564103 has 4 divisors (see below), whose sum is σ = 27163418808. Its totient is φ = 13581709400.

The previous prime is 20372564077. The next prime is 20372564131. The reversal of 20372564103 is 30146527302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20372564103 - 2⁸ = 20372563847 is a prime.

It is a super-3 number, since 3×20372564103³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372564603) 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 3 ways as a sum of consecutive naturals, for example, 3395427348 + ... + 3395427353.

It is an arithmetic number, because the mean of its divisors is an integer number (6790854702).

Almost surely, 2^20372564103 is an apocalyptic number.

20372564103 is a deficient number, since it is larger than the sum of its proper divisors (6790854705).

20372564103 is an equidigital number, since it uses as much as digits as its factorization.

20372564103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6790854704.

The product of its (nonzero) digits is 30240, while the sum is 33.

The spelling of 20372564103 in words is "twenty billion, three hundred seventy-two million, five hundred sixty-four thousand, one hundred three".