51323004040521 has 8 divisors (see below), whose sum is σ = 68432425988320. Its totient is φ = 34214459059872.

The previous prime is 51323004040519. The next prime is 51323004040547. The reversal of 51323004040521 is 12504040032315.

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

It is not a de Polignac number, because 51323004040521 - 2¹ = 51323004040519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51323004040501) 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, 219105220 + ... + 219339333.

It is an arithmetic number, because the mean of its divisors is an integer number (8554053248540).

Almost surely, 2^{51323004040521} is an apocalyptic number.

It is an amenable number.

51323004040521 is a deficient number, since it is larger than the sum of its proper divisors (17109421947799).

51323004040521 is a wasteful number, since it uses less digits than its factorization.

51323004040521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438483575.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 51323004040521 its reverse (12504040032315), we get a palindrome (63827044072836).

The spelling of 51323004040521 in words is "fifty-one trillion, three hundred twenty-three billion, four million, forty thousand, five hundred twenty-one".