20534315315342 has 8 divisors (see below), whose sum is σ = 30801524340000. Its totient is φ = 10267140535344.

The previous prime is 20534315315329. The next prime is 20534315315389. The reversal of 20534315315342 is 24351351343502.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20534315315342.

It is a congruent 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, 7005542 + ... + 9494537.

It is an arithmetic number, because the mean of its divisors is an integer number (3850190542500).

Almost surely, 2^{20534315315342} is an apocalyptic number.

20534315315342 is a deficient number, since it is larger than the sum of its proper divisors (10267209024658).

20534315315342 is a wasteful number, since it uses less digits than its factorization.

20534315315342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17122330.

The product of its (nonzero) digits is 648000, while the sum is 41.

Adding to 20534315315342 its reverse (24351351343502), we get a palindrome (44885666658844).

The spelling of 20534315315342 in words is "twenty trillion, five hundred thirty-four billion, three hundred fifteen million, three hundred fifteen thousand, three hundred forty-two".