51222322215 has 32 divisors (see below), whose sum is σ = 91383747840. Its totient is φ = 27222019488.

The previous prime is 51222322213. The next prime is 51222322223.

51222322215 is a `hidden beast` number, since 5 + 122 + 2 + 322 + 215 = 666.

51222322215 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51222322215 - 2¹ = 51222322213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51222322211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 632157 + ... + 708566.

It is an arithmetic number, because the mean of its divisors is an integer number (2855742120).

Almost surely, 2^51222322215 is an apocalyptic number.

51222322215 is a deficient number, since it is larger than the sum of its proper divisors (40161425625).

51222322215 is a wasteful number, since it uses less digits than its factorization.

51222322215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341020 (or 1341014 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The spelling of 51222322215 in words is "fifty-one billion, two hundred twenty-two million, three hundred twenty-two thousand, two hundred fifteen".