51343528222440 has 192 divisors, whose sum is σ = 167078787782400. Its totient is φ = 13674191731200.

The previous prime is 51343528222439. The next prime is 51343528222523. The reversal of 51343528222440 is 4422282534315.

51343528222440 is a `hidden beast` number, since 5 + 1 + 3 + 43 + 528 + 22 + 24 + 40 = 666.

It is a super-2 number, since 2×51343528222440² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2682375270 + ... + 2682394410.

It is an arithmetic number, because the mean of its divisors is an integer number (870202019700).

Almost surely, 2^{51343528222440} 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 51343528222440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83539393891200).

51343528222440 is an abundant number, since it is smaller than the sum of its proper divisors (115735259559960).

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

51343528222440 is a wasteful number, since it uses less digits than its factorization.

51343528222440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28248 (or 28241 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 45.

The spelling of 51343528222440 in words is "fifty-one trillion, three hundred forty-three billion, five hundred twenty-eight million, two hundred twenty-two thousand, four hundred forty".