51071942669 has 8 divisors (see below), whose sum is σ = 56478064512. Its totient is φ = 45793023840.

The previous prime is 51071942641. The next prime is 51071942689. The reversal of 51071942669 is 96624917015.

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 51071942669 - 2¹⁶ = 51071877133 is a prime.

It is a super-2 number, since 2×51071942669² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51071942629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31799909 + ... + 31801514.

It is an arithmetic number, because the mean of its divisors is an integer number (7059758064).

Almost surely, 2^51071942669 is an apocalyptic number.

It is an amenable number.

51071942669 is a deficient number, since it is larger than the sum of its proper divisors (5406121843).

51071942669 is a wasteful number, since it uses less digits than its factorization.

51071942669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63601507.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 51071942669 in words is "fifty-one billion, seventy-one million, nine hundred forty-two thousand, six hundred sixty-nine".