51352671653813 has 4 divisors (see below), whose sum is σ = 51929667964620. Its totient is φ = 50775675343008.

The previous prime is 51352671653807. The next prime is 51352671653819. The reversal of 51352671653813 is 31835617625315.

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

It is an interprime number because it is at equal distance from previous prime (51352671653807) and next prime (51352671653819).

It can be written as a sum of positive squares in 2 ways, for example, as 15890444183524 + 35462227470289 = 3986282^2 + 5955017^2 .

It is a cyclic number.

It is not a de Polignac number, because 51352671653813 - 2⁸ = 51352671653557 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 (51352671653819) 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, 288498155270 + ... + 288498155447.

It is an arithmetic number, because the mean of its divisors is an integer number (12982416991155).

Almost surely, 2^{51352671653813} is an apocalyptic number.

It is an amenable number.

51352671653813 is a deficient number, since it is larger than the sum of its proper divisors (576996310807).

51352671653813 is an equidigital number, since it uses as much as digits as its factorization.

51352671653813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576996310806.

The product of its digits is 13608000, while the sum is 56.

The spelling of 51352671653813 in words is "fifty-one trillion, three hundred fifty-two billion, six hundred seventy-one million, six hundred fifty-three thousand, eight hundred thirteen".