51271017215 has 24 divisors (see below), whose sum is σ = 69276365424. Its totient is φ = 36378531200.

The previous prime is 51271017197. The next prime is 51271017257.

51271017215 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51271017215 - 2¹⁴ = 51271000831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1008677 + ... + 1058286.

It is an arithmetic number, because the mean of its divisors is an integer number (2886515226).

Almost surely, 2^51271017215 is an apocalyptic number.

51271017215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51271017215 is a deficient number, since it is larger than the sum of its proper divisors (18005348209).

51271017215 is a wasteful number, since it uses less digits than its factorization.

51271017215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067031 (or 2067020 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 32.

It can be divided in two parts, 512710 and 17215, that added together give a palindrome (529925).

The spelling of 51271017215 in words is "fifty-one billion, two hundred seventy-one million, seventeen thousand, two hundred fifteen".