51124271712 has 96 divisors (see below), whose sum is σ = 135481248000. Its totient is φ = 16879661568.

The previous prime is 51124271669. The next prime is 51124271743. The reversal of 51124271712 is 21717242115.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×51124271712² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4330714 + ... + 4342502.

It is an arithmetic number, because the mean of its divisors is an integer number (1411263000).

Almost surely, 2^51124271712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51124271712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67740624000).

51124271712 is an abundant number, since it is smaller than the sum of its proper divisors (84356976288).

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

51124271712 is a wasteful number, since it uses less digits than its factorization.

51124271712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12228 (or 12220 counting only the distinct ones).

The product of its digits is 7840, while the sum is 33.

The spelling of 51124271712 in words is "fifty-one billion, one hundred twenty-four million, two hundred seventy-one thousand, seven hundred twelve".