51150183668 has 6 divisors (see below), whose sum is σ = 89512821426. Its totient is φ = 25575091832.

The previous prime is 51150183653. The next prime is 51150183677. The reversal of 51150183668 is 86638105115.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27445886224 + 23704297444 = 165668^2 + 153962^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6393772955 + ... + 6393772962.

It is an arithmetic number, because the mean of its divisors is an integer number (14918803571).

Almost surely, 2^51150183668 is an apocalyptic number.

It is an amenable number.

51150183668 is a deficient number, since it is larger than the sum of its proper divisors (38362637758).

51150183668 is a wasteful number, since it uses less digits than its factorization.

51150183668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12787545921 (or 12787545919 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 44.

The spelling of 51150183668 in words is "fifty-one billion, one hundred fifty million, one hundred eighty-three thousand, six hundred sixty-eight".