51658358722 has 4 divisors (see below), whose sum is σ = 77487538086. Its totient is φ = 25829179360.

The previous prime is 51658358683. The next prime is 51658358743. The reversal of 51658358722 is 22785385615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37454247961 + 14204110761 = 193531^2 + 119181^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51658358722.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12914589679 + ... + 12914589682.

Almost surely, 2^51658358722 is an apocalyptic number.

51658358722 is a deficient number, since it is larger than the sum of its proper divisors (25829179364).

51658358722 is a wasteful number, since it uses less digits than its factorization.

51658358722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25829179363.

The product of its digits is 4032000, while the sum is 52.

The spelling of 51658358722 in words is "fifty-one billion, six hundred fifty-eight million, three hundred fifty-eight thousand, seven hundred twenty-two".