51342351221013 has 8 divisors (see below), whose sum is σ = 68456502060768. Its totient is φ = 34228217264304.

The previous prime is 51342351221003. The next prime is 51342351221197. The reversal of 51342351221013 is 31012215324315.

It is a happy number.

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

It is not a de Polignac number, because 51342351221013 - 2⁶ = 51342351220949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51342351221003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7622131 + ... + 12679967.

It is an arithmetic number, because the mean of its divisors is an integer number (8557062757596).

Almost surely, 2^{51342351221013} is an apocalyptic number.

It is an amenable number.

51342351221013 is a deficient number, since it is larger than the sum of its proper divisors (17114150839755).

51342351221013 is a wasteful number, since it uses less digits than its factorization.

51342351221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8441523.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 51342351221013 its reverse (31012215324315), we get a palindrome (82354566545328).

The spelling of 51342351221013 in words is "fifty-one trillion, three hundred forty-two billion, three hundred fifty-one million, two hundred twenty-one thousand, thirteen".