51325208409 has 8 divisors (see below), whose sum is σ = 68586026400. Its totient is φ = 34140598016.

The previous prime is 51325208401. The next prime is 51325208413. The reversal of 51325208409 is 90480252315.

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 51325208409 - 2³ = 51325208401 is a prime.

It is a super-2 number, since 2×51325208409² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51325208401) 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, 19050327 + ... + 19053020.

It is an arithmetic number, because the mean of its divisors is an integer number (8573253300).

Almost surely, 2^51325208409 is an apocalyptic number.

It is an amenable number.

51325208409 is a deficient number, since it is larger than the sum of its proper divisors (17260817991).

51325208409 is a wasteful number, since it uses less digits than its factorization.

51325208409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38103799.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 51325208409 in words is "fifty-one billion, three hundred twenty-five million, two hundred eight thousand, four hundred nine".