51812025522511 has 4 divisors (see below), whose sum is σ = 51813067837024. Its totient is φ = 51810983208000.

The previous prime is 51812025522479. The next prime is 51812025522529. The reversal of 51812025522511 is 11522552021815.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51812025522511 - 2⁵ = 51812025522479 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 (51812025522611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521082690 + ... + 521182111.

It is an arithmetic number, because the mean of its divisors is an integer number (12953266959256).

Almost surely, 2^{51812025522511} is an apocalyptic number.

51812025522511 is a deficient number, since it is larger than the sum of its proper divisors (1042314513).

51812025522511 is a wasteful number, since it uses less digits than its factorization.

51812025522511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042314512.

The product of its (nonzero) digits is 80000, while the sum is 40.

The spelling of 51812025522511 in words is "fifty-one trillion, eight hundred twelve billion, twenty-five million, five hundred twenty-two thousand, five hundred eleven".