20718234951342 has 32 divisors (see below), whose sum is σ = 41571731036832. Its totient is φ = 6883537849344.

The previous prime is 20718234951283. The next prime is 20718234951343. The reversal of 20718234951342 is 24315943281702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20718234951343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27301788 + ... + 28050384.

It is an arithmetic number, because the mean of its divisors is an integer number (1299116594901).

Almost surely, 2^{20718234951342} is an apocalyptic number.

20718234951342 is an abundant number, since it is smaller than the sum of its proper divisors (20853496085490).

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

20718234951342 is a wasteful number, since it uses less digits than its factorization.

20718234951342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763652.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 20718234951342 in words is "twenty trillion, seven hundred eighteen billion, two hundred thirty-four million, nine hundred fifty-one thousand, three hundred forty-two".