51771381185 has 8 divisors (see below), whose sum is σ = 62174238720. Its totient is φ = 41384717424.

The previous prime is 51771381157. The next prime is 51771381209. The reversal of 51771381185 is 58118317715.

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-51771381185 is a prime.

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, 4041407 + ... + 4054196.

It is an arithmetic number, because the mean of its divisors is an integer number (7771779840).

Almost surely, 2^51771381185 is an apocalyptic number.

It is an amenable number.

51771381185 is a deficient number, since it is larger than the sum of its proper divisors (10402857535).

51771381185 is a wasteful number, since it uses less digits than its factorization.

51771381185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8096887.

The product of its digits is 235200, while the sum is 47.

The spelling of 51771381185 in words is "fifty-one billion, seven hundred seventy-one million, three hundred eighty-one thousand, one hundred eighty-five".