51122543680 has 224 divisors, whose sum is σ = 134058355200. Its totient is φ = 18454487040.

The previous prime is 51122543651. The next prime is 51122543687. The reversal of 51122543680 is 8634522115.

It is a super-2 number, since 2×51122543680² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51122543687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41528665 + ... + 41529895.

It is an arithmetic number, because the mean of its divisors is an integer number (598474800).

Almost surely, 2^51122543680 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 51122543680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67029177600).

51122543680 is an abundant number, since it is smaller than the sum of its proper divisors (82935811520).

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

51122543680 is a wasteful number, since it uses less digits than its factorization.

51122543680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1467 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 51122543680 in words is "fifty-one billion, one hundred twenty-two million, five hundred forty-three thousand, six hundred eighty".