51132420323 has 8 divisors (see below), whose sum is σ = 55136371920. Its totient is φ = 47259745920.

The previous prime is 51132420281. The next prime is 51132420347. The reversal of 51132420323 is 32302423115.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51132420323 is a prime.

It is a super-2 number, since 2×51132420323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51132420292 and 51132420301.

It is not an unprimeable number, because it can be changed into a prime (51132423323) 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, 32818490 + ... + 32820047.

It is an arithmetic number, because the mean of its divisors is an integer number (6892046490).

Almost surely, 2^51132420323 is an apocalyptic number.

51132420323 is a deficient number, since it is larger than the sum of its proper divisors (4003951597).

51132420323 is a wasteful number, since it uses less digits than its factorization.

51132420323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65638597.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 51132420323 its reverse (32302423115), we get a palindrome (83434843438).

The spelling of 51132420323 in words is "fifty-one billion, one hundred thirty-two million, four hundred twenty thousand, three hundred twenty-three".