51371768445601 has 8 divisors (see below), whose sum is σ = 52343949297384. Its totient is φ = 50399695082880.

The previous prime is 51371768445589. The next prime is 51371768445617. The reversal of 51371768445601 is 10654486717315.

It can be written as a sum of positive squares in 4 ways, for example, as 2502720836001 + 48869047609600 = 1581999^2 + 6990640^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51371768445601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51371768445661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25907046 + ... + 27819391.

It is an arithmetic number, because the mean of its divisors is an integer number (6542993662173).

Almost surely, 2^{51371768445601} is an apocalyptic number.

It is an amenable number.

51371768445601 is a deficient number, since it is larger than the sum of its proper divisors (972180851783).

51371768445601 is a wasteful number, since it uses less digits than its factorization.

51371768445601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53744531.

The product of its (nonzero) digits is 16934400, while the sum is 58.

The spelling of 51371768445601 in words is "fifty-one trillion, three hundred seventy-one billion, seven hundred sixty-eight million, four hundred forty-five thousand, six hundred one".