20257754838 has 8 divisors (see below), whose sum is σ = 40515509688. Its totient is φ = 6752584944.

The previous prime is 20257754753. The next prime is 20257754857. The reversal of 20257754838 is 83845775202.

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

20257754838 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688146231 + ... + 1688146242.

It is an arithmetic number, because the mean of its divisors is an integer number (5064438711).

Almost surely, 2^20257754838 is an apocalyptic number.

20257754838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20257754838 is a wasteful number, since it uses less digits than its factorization.

20257754838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376292478.

The product of its (nonzero) digits is 3763200, while the sum is 51.

The spelling of 20257754838 in words is "twenty billion, two hundred fifty-seven million, seven hundred fifty-four thousand, eight hundred thirty-eight".