51297080071 has 4 divisors (see below), whose sum is σ = 51999779872. Its totient is φ = 50594380272.

The previous prime is 51297080063. The next prime is 51297080077. The reversal of 51297080071 is 17008079215.

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 51297080071 - 2³ = 51297080063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51297080077) 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, 351349791 + ... + 351349936.

It is an arithmetic number, because the mean of its divisors is an integer number (12999944968).

Almost surely, 2^51297080071 is an apocalyptic number.

51297080071 is a deficient number, since it is larger than the sum of its proper divisors (702699801).

51297080071 is an equidigital number, since it uses as much as digits as its factorization.

51297080071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702699800.

The product of its (nonzero) digits is 35280, while the sum is 40.

The spelling of 51297080071 in words is "fifty-one billion, two hundred ninety-seven million, eighty thousand, seventy-one".