51202220215 has 4 divisors (see below), whose sum is σ = 61442664264. Its totient is φ = 40961776168.

The previous prime is 51202220183. The next prime is 51202220239.

51202220215 is nontrivially palindromic in base 10.

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 51202220215 - 2⁵ = 51202220183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5120222017 + ... + 5120222026.

It is an arithmetic number, because the mean of its divisors is an integer number (15360666066).

Almost surely, 2^51202220215 is an apocalyptic number.

51202220215 is a deficient number, since it is larger than the sum of its proper divisors (10240444049).

51202220215 is a wasteful number, since it uses less digits than its factorization.

51202220215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10240444048.

The product of its (nonzero) digits is 800, while the sum is 22.

The spelling of 51202220215 in words is "fifty-one billion, two hundred two million, two hundred twenty thousand, two hundred fifteen".