51612013823 has 8 divisors (see below), whose sum is σ = 53861047296. Its totient is φ = 49363399800.

The previous prime is 51612013819. The next prime is 51612013879. The reversal of 51612013823 is 32831021615.

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 51612013823 - 2² = 51612013819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51612013823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51612010823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160958 + ... + 359348.

It is an arithmetic number, because the mean of its divisors is an integer number (6732630912).

Almost surely, 2^51612013823 is an apocalyptic number.

51612013823 is a deficient number, since it is larger than the sum of its proper divisors (2249033473).

51612013823 is a wasteful number, since it uses less digits than its factorization.

51612013823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209725.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 51612013823 in words is "fifty-one billion, six hundred twelve million, thirteen thousand, eight hundred twenty-three".