20254272638 has 16 divisors (see below), whose sum is σ = 31212832464. Its totient is φ = 9850176000.

The previous prime is 20254272613. The next prime is 20254272803. The reversal of 20254272638 is 83627245202.

20254272638 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 20254272595 and 20254272604.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 188513 + ... + 275763.

It is an arithmetic number, because the mean of its divisors is an integer number (1950802029).

Almost surely, 2^20254272638 is an apocalyptic number.

20254272638 is a deficient number, since it is larger than the sum of its proper divisors (10958559826).

20254272638 is a wasteful number, since it uses less digits than its factorization.

20254272638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90427.

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 20254272638 in words is "twenty billion, two hundred fifty-four million, two hundred seventy-two thousand, six hundred thirty-eight".