20073100457 has 4 divisors (see below), whose sum is σ = 20084186256. Its totient is φ = 20062014660.

The previous prime is 20073100447. The next prime is 20073100483. The reversal of 20073100457 is 75400137002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20073100457 - 2¹² = 20073096361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20073100447) 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, 5540183 + ... + 5543804.

It is an arithmetic number, because the mean of its divisors is an integer number (5021046564).

Almost surely, 2^20073100457 is an apocalyptic number.

It is an amenable number.

20073100457 is a deficient number, since it is larger than the sum of its proper divisors (11085799).

20073100457 is a wasteful number, since it uses less digits than its factorization.

20073100457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11085798.

The product of its (nonzero) digits is 5880, while the sum is 29.

Adding to 20073100457 its reverse (75400137002), we get a palindrome (95473237459).

The spelling of 20073100457 in words is "twenty billion, seventy-three million, one hundred thousand, four hundred fifty-seven".