51129043229 has 8 divisors (see below), whose sum is σ = 55778777760. Its totient is φ = 46479582000.

The previous prime is 51129043213. The next prime is 51129043279. The reversal of 51129043229 is 92234092115.

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 not a de Polignac number, because 51129043229 - 2⁴ = 51129043213 is a prime.

It is a super-3 number, since 3×51129043229³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51129043192 and 51129043201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51129043279) 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, 666542 + ... + 739280.

It is an arithmetic number, because the mean of its divisors is an integer number (6972347220).

Almost surely, 2^51129043229 is an apocalyptic number.

It is an amenable number.

51129043229 is a deficient number, since it is larger than the sum of its proper divisors (4649734531).

51129043229 is a wasteful number, since it uses less digits than its factorization.

51129043229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136651.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 51129043229 in words is "fifty-one billion, one hundred twenty-nine million, forty-three thousand, two hundred twenty-nine".