51602676463721 has 4 divisors (see below), whose sum is σ = 51620151128532. Its totient is φ = 51585201798912.

The previous prime is 51602676463697. The next prime is 51602676463771. The reversal of 51602676463721 is 12736467620615.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 44511847758400 + 7090828705321 = 6671720^2 + 2662861^2 .

It is a cyclic number.

It is not a de Polignac number, because 51602676463721 - 2¹⁰ = 51602676462697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51602676463771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8737327976 + ... + 8737333881.

It is an arithmetic number, because the mean of its divisors is an integer number (12905037782133).

Almost surely, 2^{51602676463721} is an apocalyptic number.

It is an amenable number.

51602676463721 is a deficient number, since it is larger than the sum of its proper divisors (17474664811).

51602676463721 is a wasteful number, since it uses less digits than its factorization.

51602676463721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17474664810.

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 51602676463721 in words is "fifty-one trillion, six hundred two billion, six hundred seventy-six million, four hundred sixty-three thousand, seven hundred twenty-one".