51456956267 has 4 divisors (see below), whose sum is σ = 51458567160. Its totient is φ = 51455345376.

The previous prime is 51456956263. The next prime is 51456956293. The reversal of 51456956267 is 76265965415.

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 51456956267 - 2² = 51456956263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51456956263) 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, 756542 + ... + 821747.

It is an arithmetic number, because the mean of its divisors is an integer number (12864641790).

Almost surely, 2^51456956267 is an apocalyptic number.

51456956267 is a deficient number, since it is larger than the sum of its proper divisors (1610893).

51456956267 is a wasteful number, since it uses less digits than its factorization.

51456956267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610892.

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

The spelling of 51456956267 in words is "fifty-one billion, four hundred fifty-six million, nine hundred fifty-six thousand, two hundred sixty-seven".