51281358829 has 8 divisors (see below), whose sum is σ = 51731896320. Its totient is φ = 50831552016.

The previous prime is 51281358803. The next prime is 51281358881. The reversal of 51281358829 is 92885318215.

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 51281358829 - 2⁵ = 51281358797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51281358229) 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, 41209 + ... + 322894.

It is an arithmetic number, because the mean of its divisors is an integer number (6466487040).

Almost surely, 2^51281358829 is an apocalyptic number.

It is an amenable number.

51281358829 is a deficient number, since it is larger than the sum of its proper divisors (450537491).

51281358829 is a wasteful number, since it uses less digits than its factorization.

51281358829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365339.

The product of its digits is 1382400, while the sum is 52.

The spelling of 51281358829 in words is "fifty-one billion, two hundred eighty-one million, three hundred fifty-eight thousand, eight hundred twenty-nine".