51128476856252 has 12 divisors (see below), whose sum is σ = 89531788573416. Its totient is φ = 25547965835280.

The previous prime is 51128476856221. The next prime is 51128476856309. The reversal of 51128476856252 is 25265867482115.

It is a super-2 number, since 2×51128476856252² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4068141143 + ... + 4068153710.

It is an arithmetic number, because the mean of its divisors is an integer number (7460982381118).

Almost surely, 2^{51128476856252} is an apocalyptic number.

It is an amenable number.

51128476856252 is a deficient number, since it is larger than the sum of its proper divisors (38403311717164).

51128476856252 is a wasteful number, since it uses less digits than its factorization.

51128476856252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8136296428 (or 8136296426 counting only the distinct ones).

The product of its digits is 64512000, while the sum is 62.

The spelling of 51128476856252 in words is "fifty-one trillion, one hundred twenty-eight billion, four hundred seventy-six million, eight hundred fifty-six thousand, two hundred fifty-two".