51442728117771 has 8 divisors (see below), whose sum is σ = 70444096161424. Its totient is φ = 33368256076320.

The previous prime is 51442728117761. The next prime is 51442728117839. The reversal of 51442728117771 is 17771182724415.

It is a happy number.

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

It is not a de Polignac number, because 51442728117771 - 2¹⁹ = 51442727593483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51442728117761) 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, 231724000420 + ... + 231724000641.

It is an arithmetic number, because the mean of its divisors is an integer number (8805512020178).

Almost surely, 2^{51442728117771} is an apocalyptic number.

51442728117771 is a deficient number, since it is larger than the sum of its proper divisors (19001368043653).

51442728117771 is a wasteful number, since it uses less digits than its factorization.

51442728117771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463448001101.

The product of its digits is 6146560, while the sum is 57.

The spelling of 51442728117771 in words is "fifty-one trillion, four hundred forty-two billion, seven hundred twenty-eight million, one hundred seventeen thousand, seven hundred seventy-one".