20357243754 has 8 divisors (see below), whose sum is σ = 40714487520. Its totient is φ = 6785747916.

The previous prime is 20357243747. The next prime is 20357243779. The reversal of 20357243754 is 45734275302.

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

20357243754 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1696436974 + ... + 1696436985.

It is an arithmetic number, because the mean of its divisors is an integer number (5089310940).

Almost surely, 2^20357243754 is an apocalyptic number.

20357243754 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.

20357243754 is a wasteful number, since it uses less digits than its factorization.

20357243754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392873964.

The product of its (nonzero) digits is 705600, while the sum is 42.

The spelling of 20357243754 in words is "twenty billion, three hundred fifty-seven million, two hundred forty-three thousand, seven hundred fifty-four".