20542753147 has 8 divisors (see below), whose sum is σ = 23501130752. Its totient is φ = 17590300200.

The previous prime is 20542753141. The next prime is 20542753151. The reversal of 20542753147 is 74135724502.

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

It is a cyclic number.

It is not a de Polignac number, because 20542753147 - 2⁷ = 20542753019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20542753141) 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 7 ways as a sum of consecutive naturals, for example, 1473729 + ... + 1487602.

It is an arithmetic number, because the mean of its divisors is an integer number (2937641344).

Almost surely, 2^20542753147 is an apocalyptic number.

20542753147 is a deficient number, since it is larger than the sum of its proper divisors (2958377605).

20542753147 is an equidigital number, since it uses as much as digits as its factorization.

20542753147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962329.

The product of its (nonzero) digits is 235200, while the sum is 40.

The spelling of 20542753147 in words is "twenty billion, five hundred forty-two million, seven hundred fifty-three thousand, one hundred forty-seven".