51711543512216 has 64 divisors (see below), whose sum is σ = 115632840660480. Its totient is φ = 21197687765760.

The previous prime is 51711543512117. The next prime is 51711543512231. The reversal of 51711543512216 is 61221534511715.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32540636 + ... + 34092756.

It is an arithmetic number, because the mean of its divisors is an integer number (1806763135320).

Almost surely, 2^{51711543512216} is an apocalyptic number.

51711543512216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51711543512216 is an abundant number, since it is smaller than the sum of its proper divisors (63921297148264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51711543512216 is a wasteful number, since it uses less digits than its factorization.

51711543512216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578024 (or 1578020 counting only the distinct ones).

The product of its digits is 252000, while the sum is 44.

The spelling of 51711543512216 in words is "fifty-one trillion, seven hundred eleven billion, five hundred forty-three million, five hundred twelve thousand, two hundred sixteen".