51812025522513 has 16 divisors (see below), whose sum is σ = 70031797904640. Its totient is φ = 34066839026304.

The previous prime is 51812025522479. The next prime is 51812025522529. The reversal of 51812025522513 is 31522552021815.

It is a happy number.

It is not a de Polignac number, because 51812025522513 - 2¹⁰ = 51812025521489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51812025522533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 926728 + ... + 10221686.

It is an arithmetic number, because the mean of its divisors is an integer number (4376987369040).

Almost surely, 2^{51812025522513} is an apocalyptic number.

It is an amenable number.

51812025522513 is a deficient number, since it is larger than the sum of its proper divisors (18219772382127).

51812025522513 is a wasteful number, since it uses less digits than its factorization.

51812025522513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9320488.

The product of its (nonzero) digits is 240000, while the sum is 42.

The spelling of 51812025522513 in words is "fifty-one trillion, eight hundred twelve billion, twenty-five million, five hundred twenty-two thousand, five hundred thirteen".