51561051067 has 8 divisors (see below), whose sum is σ = 53848421280. Its totient is φ = 49277479680.

The previous prime is 51561051053. The next prime is 51561051083. The reversal of 51561051067 is 76015016515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51561051067 - 2¹¹ = 51561049019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51561054067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921942 + ... + 976267.

It is an arithmetic number, because the mean of its divisors is an integer number (6731052660).

Almost surely, 2^51561051067 is an apocalyptic number.

51561051067 is a deficient number, since it is larger than the sum of its proper divisors (2287370213).

51561051067 is a wasteful number, since it uses less digits than its factorization.

51561051067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899413.

The product of its (nonzero) digits is 31500, while the sum is 37.

The spelling of 51561051067 in words is "fifty-one billion, five hundred sixty-one million, fifty-one thousand, sixty-seven".