51193122067 has 4 divisors (see below), whose sum is σ = 51205914760. Its totient is φ = 51180329376.

The previous prime is 51193122031. The next prime is 51193122121. The reversal of 51193122067 is 76022139115.

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 51193122067 - 2¹¹ = 51193120019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51193122467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6390342 + ... + 6398347.

It is an arithmetic number, because the mean of its divisors is an integer number (12801478690).

Almost surely, 2^51193122067 is an apocalyptic number.

51193122067 is a deficient number, since it is larger than the sum of its proper divisors (12792693).

51193122067 is a wasteful number, since it uses less digits than its factorization.

51193122067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12792692.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 51193122067 in words is "fifty-one billion, one hundred ninety-three million, one hundred twenty-two thousand, sixty-seven".