51488550466 has 8 divisors (see below), whose sum is σ = 77411193804. Its totient is φ = 25684819200.

The previous prime is 51488550389. The next prime is 51488550479. The reversal of 51488550466 is 66405588415.

It can be written as a sum of positive squares in 2 ways, for example, as 49370618025 + 2117932441 = 222195^2 + 46021^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29726935 + ... + 29728666.

Almost surely, 2^51488550466 is an apocalyptic number.

51488550466 is a deficient number, since it is larger than the sum of its proper divisors (25922643338).

51488550466 is a wasteful number, since it uses less digits than its factorization.

51488550466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59456036.

The product of its (nonzero) digits is 4608000, while the sum is 52.

The spelling of 51488550466 in words is "fifty-one billion, four hundred eighty-eight million, five hundred fifty thousand, four hundred sixty-six".