51090965672 has 8 divisors (see below), whose sum is σ = 95795560650. Its totient is φ = 25545482832.

The previous prime is 51090965669. The next prime is 51090965683. The reversal of 51090965672 is 27656909015.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 50982930436 + 108035236 = 225794^2 + 10394^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×51090965672³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 51090965672.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3193185347 + ... + 3193185362.

Almost surely, 2^51090965672 is an apocalyptic number.

It is an amenable number.

51090965672 is a deficient number, since it is larger than the sum of its proper divisors (44704594978).

51090965672 is a wasteful number, since it uses less digits than its factorization.

51090965672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386370715 (or 6386370711 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 50.

The spelling of 51090965672 in words is "fifty-one billion, ninety million, nine hundred sixty-five thousand, six hundred seventy-two".