51011010071 has 4 divisors (see below), whose sum is σ = 58298297232. Its totient is φ = 43723722912.

The previous prime is 51011010031. The next prime is 51011010073. The reversal of 51011010071 is 17001011015.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51011010071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51011010073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3643643570 + ... + 3643643583.

It is an arithmetic number, because the mean of its divisors is an integer number (14574574308).

Almost surely, 2^51011010071 is an apocalyptic number.

51011010071 is a deficient number, since it is larger than the sum of its proper divisors (7287287161).

51011010071 is an equidigital number, since it uses as much as digits as its factorization.

51011010071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7287287160.

The product of its (nonzero) digits is 35, while the sum is 17.

Adding to 51011010071 its reverse (17001011015), we get a palindrome (68012021086).

The spelling of 51011010071 in words is "fifty-one billion, eleven million, ten thousand, seventy-one".