51267612313 has 4 divisors (see below), whose sum is σ = 51270108880. Its totient is φ = 51265115748.

The previous prime is 51267612311. The next prime is 51267612323. The reversal of 51267612313 is 31321676215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51267612313 - 2¹ = 51267612311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51267612311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217223 + ... + 1258636.

It is an arithmetic number, because the mean of its divisors is an integer number (12817527220).

Almost surely, 2^51267612313 is an apocalyptic number.

It is an amenable number.

51267612313 is a deficient number, since it is larger than the sum of its proper divisors (2496567).

51267612313 is a wasteful number, since it uses less digits than its factorization.

51267612313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496566.

The product of its digits is 45360, while the sum is 37.

The spelling of 51267612313 in words is "fifty-one billion, two hundred sixty-seven million, six hundred twelve thousand, three hundred thirteen".