20430115751 has 4 divisors (see below), whose sum is σ = 20505503904. Its totient is φ = 20354727600.

The previous prime is 20430115733. The next prime is 20430115763. The reversal of 20430115751 is 15751103402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20430115751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430115781) 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 3 ways as a sum of consecutive naturals, for example, 37693670 + ... + 37694211.

It is an arithmetic number, because the mean of its divisors is an integer number (5126375976).

Almost surely, 2^20430115751 is an apocalyptic number.

20430115751 is a deficient number, since it is larger than the sum of its proper divisors (75388153).

20430115751 is an equidigital number, since it uses as much as digits as its factorization.

20430115751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75388152.

The product of its (nonzero) digits is 4200, while the sum is 29.

The spelling of 20430115751 in words is "twenty billion, four hundred thirty million, one hundred fifteen thousand, seven hundred fifty-one".