51942512672 has 18 divisors (see below), whose sum is σ = 102264360093. Its totient is φ = 25970611712.

The previous prime is 51942512663. The next prime is 51942512681. The reversal of 51942512672 is 27621524915.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (51942512663) and next prime (51942512681).

It can be written as a sum of positive squares in 2 ways, for example, as 34612369936 + 17330142736 = 186044^2 + 131644^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=161156.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1269104 + ... + 1309392.

Almost surely, 2^51942512672 is an apocalyptic number.

It is an amenable number.

51942512672 is a deficient number, since it is larger than the sum of its proper divisors (50321847421).

51942512672 is an frugal number, since it uses more digits than its factorization.

51942512672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80588 (or 40291 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The spelling of 51942512672 in words is "fifty-one billion, nine hundred forty-two million, five hundred twelve thousand, six hundred seventy-two".