51111750016 has 64 divisors (see below), whose sum is σ = 102249434880. Its totient is φ = 25449435648.

The previous prime is 51111749989. The next prime is 51111750101. The reversal of 51111750016 is 61005711115.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×51111750016³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 57622725 + ... + 57623611.

It is an arithmetic number, because the mean of its divisors is an integer number (1597647420).

Almost surely, 2^51111750016 is an apocalyptic number.

It is an amenable number.

51111750016 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

51111750016 is an equidigital number, since it uses as much as digits as its factorization.

51111750016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271 (or 2259 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 28.

The spelling of 51111750016 in words is "fifty-one billion, one hundred eleven million, seven hundred fifty thousand, sixteen".