20343134514151 has 4 divisors (see below), whose sum is σ = 20350000239192. Its totient is φ = 20336268789112.

The previous prime is 20343134514121. The next prime is 20343134514239. The reversal of 20343134514151 is 15141543134302.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20343134514151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20343134514151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343134514121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3432858076 + ... + 3432864001.

It is an arithmetic number, because the mean of its divisors is an integer number (5087500059798).

Almost surely, 2^{20343134514151} is an apocalyptic number.

20343134514151 is a deficient number, since it is larger than the sum of its proper divisors (6865725041).

20343134514151 is an equidigital number, since it uses as much as digits as its factorization.

20343134514151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865725040.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 20343134514151 its reverse (15141543134302), we get a palindrome (35484677648453).

The spelling of 20343134514151 in words is "twenty trillion, three hundred forty-three billion, one hundred thirty-four million, five hundred fourteen thousand, one hundred fifty-one".