20351373142 has 4 divisors (see below), whose sum is σ = 30527059716. Its totient is φ = 10175686570.

The previous prime is 20351373139. The next prime is 20351373151. The reversal of 20351373142 is 24137315302.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5087843284 + ... + 5087843287.

It is an arithmetic number, because the mean of its divisors is an integer number (7631764929).

Almost surely, 2^20351373142 is an apocalyptic number.

20351373142 is a deficient number, since it is larger than the sum of its proper divisors (10175686574).

20351373142 is a wasteful number, since it uses less digits than its factorization.

20351373142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10175686573.

The product of its (nonzero) digits is 15120, while the sum is 31.

Adding to 20351373142 its reverse (24137315302), we get a palindrome (44488688444).

The spelling of 20351373142 in words is "twenty billion, three hundred fifty-one million, three hundred seventy-three thousand, one hundred forty-two".