51164151403613 has 4 divisors (see below), whose sum is σ = 51164181481788. Its totient is φ = 51164121325440.

The previous prime is 51164151403591. The next prime is 51164151403669. The reversal of 51164151403613 is 31630415146115.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4012898381284 + 47151253022329 = 2003222^2 + 6866677^2 .

It is a cyclic number.

It is not a de Polignac number, because 51164151403613 - 2¹⁰ = 51164151402589 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 (51164151403913) 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, 12324158 + ... + 15944063.

It is an arithmetic number, because the mean of its divisors is an integer number (12791045370447).

Almost surely, 2^{51164151403613} is an apocalyptic number.

It is an amenable number.

51164151403613 is a deficient number, since it is larger than the sum of its proper divisors (30078175).

51164151403613 is a wasteful number, since it uses less digits than its factorization.

51164151403613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30078174.

The product of its (nonzero) digits is 129600, while the sum is 41.

Adding to 51164151403613 its reverse (31630415146115), we get a palindrome (82794566549728).

The spelling of 51164151403613 in words is "fifty-one trillion, one hundred sixty-four billion, one hundred fifty-one million, four hundred three thousand, six hundred thirteen".