51142113213 has 8 divisors (see below), whose sum is σ = 68851518528. Its totient is φ = 33763725024.

The previous prime is 51142113181. The next prime is 51142113247. The reversal of 51142113213 is 31231124115.

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

It is not a de Polignac number, because 51142113213 - 2⁵ = 51142113181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51142113283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82753920 + ... + 82754537.

It is an arithmetic number, because the mean of its divisors is an integer number (8606439816).

Almost surely, 2^51142113213 is an apocalyptic number.

It is an amenable number.

51142113213 is a deficient number, since it is larger than the sum of its proper divisors (17709405315).

51142113213 is a wasteful number, since it uses less digits than its factorization.

51142113213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165508563.

The product of its digits is 720, while the sum is 24.

Adding to 51142113213 its reverse (31231124115), we get a palindrome (82373237328).

The spelling of 51142113213 in words is "fifty-one billion, one hundred forty-two million, one hundred thirteen thousand, two hundred thirteen".