51205522305 has 16 divisors (see below), whose sum is σ = 93632955264. Its totient is φ = 23408238720.

The previous prime is 51205522297. The next prime is 51205522307. The reversal of 51205522305 is 50322550215.

It is not a de Polignac number, because 51205522305 - 2³ = 51205522297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51205522307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243835716 + ... + 243835925.

It is an arithmetic number, because the mean of its divisors is an integer number (5852059704).

Almost surely, 2^51205522305 is an apocalyptic number.

It is an amenable number.

51205522305 is a deficient number, since it is larger than the sum of its proper divisors (42427432959).

51205522305 is a wasteful number, since it uses less digits than its factorization.

51205522305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487671656.

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 51205522305 in words is "fifty-one billion, two hundred five million, five hundred twenty-two thousand, three hundred five".