20434725051 has 8 divisors (see below), whose sum is σ = 29342169360. Its totient is φ = 12575215392.

The previous prime is 20434725043. The next prime is 20434725083. The reversal of 20434725051 is 15052743402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20434725051 - 2³ = 20434725043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20434725251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261983616 + ... + 261983693.

It is an arithmetic number, because the mean of its divisors is an integer number (3667771170).

Almost surely, 2^20434725051 is an apocalyptic number.

20434725051 is a deficient number, since it is larger than the sum of its proper divisors (8907444309).

20434725051 is a wasteful number, since it uses less digits than its factorization.

20434725051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523967325.

The product of its (nonzero) digits is 33600, while the sum is 33.

The spelling of 20434725051 in words is "twenty billion, four hundred thirty-four million, seven hundred twenty-five thousand, fifty-one".