20254941047 has 32 divisors (see below), whose sum is σ = 23484375360. Its totient is φ = 17441424000.

The previous prime is 20254941041. The next prime is 20254941059. The reversal of 20254941047 is 74014945202.

It is not a de Polignac number, because 20254941047 - 2³⁴ = 3075071863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20254941047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20254941041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2040797 + ... + 2050697.

It is an arithmetic number, because the mean of its divisors is an integer number (733886730).

Almost surely, 2^20254941047 is an apocalyptic number.

20254941047 is a deficient number, since it is larger than the sum of its proper divisors (3229434313).

20254941047 is an equidigital number, since it uses as much as digits as its factorization.

20254941047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016 (or 9994 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 20254941047 in words is "twenty billion, two hundred fifty-four million, nine hundred forty-one thousand, forty-seven".