20542307051 has 8 divisors (see below), whose sum is σ = 24857917920. Its totient is φ = 16571945088.

The previous prime is 20542307021. The next prime is 20542307063. The reversal of 20542307051 is 15070324502.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20542307051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20542307021) 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 7 ways as a sum of consecutive naturals, for example, 86312096 + ... + 86312333.

It is an arithmetic number, because the mean of its divisors is an integer number (3107239740).

Almost surely, 2^20542307051 is an apocalyptic number.

20542307051 is a deficient number, since it is larger than the sum of its proper divisors (4315610869).

20542307051 is a wasteful number, since it uses less digits than its factorization.

20542307051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172624453.

The product of its (nonzero) digits is 8400, while the sum is 29.

The spelling of 20542307051 in words is "twenty billion, five hundred forty-two million, three hundred seven thousand, fifty-one".