51556711170667 has 8 divisors (see below), whose sum is σ = 52410747828800. Its totient is φ = 50705160792264.

The previous prime is 51556711170661. The next prime is 51556711170703. The reversal of 51556711170667 is 76607111765515.

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

It is a cyclic number.

It is not a de Polignac number, because 51556711170667 - 2³⁹ = 51006955356779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51556711170661) 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, 621528117 + ... + 621611062.

It is an arithmetic number, because the mean of its divisors is an integer number (6551343478600).

Almost surely, 2^{51556711170667} is an apocalyptic number.

51556711170667 is a deficient number, since it is larger than the sum of its proper divisors (854036658133).

51556711170667 is a wasteful number, since it uses less digits than its factorization.

51556711170667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243139865.

The product of its (nonzero) digits is 9261000, while the sum is 58.

The spelling of 51556711170667 in words is "fifty-one trillion, five hundred fifty-six billion, seven hundred eleven million, one hundred seventy thousand, six hundred sixty-seven".