51217671215 has 8 divisors (see below), whose sum is σ = 62620851168. Its totient is φ = 40201039840.

The previous prime is 51217671203. The next prime is 51217671229.

51217671215 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 51217671215 - 2¹⁶ = 51217605679 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 7 ways as a sum of consecutive naturals, for example, 96636851 + ... + 96637380.

It is an arithmetic number, because the mean of its divisors is an integer number (7827606396).

Almost surely, 2^51217671215 is an apocalyptic number.

51217671215 is a deficient number, since it is larger than the sum of its proper divisors (11403179953).

51217671215 is a wasteful number, since it uses less digits than its factorization.

51217671215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193274289.

The product of its digits is 29400, while the sum is 38.

The spelling of 51217671215 in words is "fifty-one billion, two hundred seventeen million, six hundred seventy-one thousand, two hundred fifteen".