20354311715142 has 8 divisors (see below), whose sum is σ = 40708623430296. Its totient is φ = 6784770571712.

The previous prime is 20354311715083. The next prime is 20354311715189. The reversal of 20354311715142 is 24151711345302.

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

20354311715142 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 20354311715142.

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, 1696192642923 + ... + 1696192642934.

It is an arithmetic number, because the mean of its divisors is an integer number (5088577928787).

Almost surely, 2^{20354311715142} is an apocalyptic number.

20354311715142 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.

20354311715142 is a wasteful number, since it uses less digits than its factorization.

20354311715142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392385285862.

The product of its (nonzero) digits is 100800, while the sum is 39.

It can be divided in two parts, 2035431 and 1715142, that added together give a palindrome (3750573).

The spelling of 20354311715142 in words is "twenty trillion, three hundred fifty-four billion, three hundred eleven million, seven hundred fifteen thousand, one hundred forty-two".