51556711021606 has 16 divisors (see below), whose sum is σ = 88461217470240. Its totient is φ = 22076162222400.

The previous prime is 51556711021597. The next prime is 51556711021637. The reversal of 51556711021606 is 60612011765515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1630906345 + ... + 1630937956.

It is an arithmetic number, because the mean of its divisors is an integer number (5528826091890).

Almost surely, 2^{51556711021606} is an apocalyptic number.

51556711021606 is a deficient number, since it is larger than the sum of its proper divisors (36904506448634).

51556711021606 is a wasteful number, since it uses less digits than its factorization.

51556711021606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261845439.

The product of its (nonzero) digits is 378000, while the sum is 46.

The spelling of 51556711021606 in words is "fifty-one trillion, five hundred fifty-six billion, seven hundred eleven million, twenty-one thousand, six hundred six".