51560551635240 has 576 divisors, whose sum is σ = 167667605614080. Its totient is φ = 12681425664000.

The previous prime is 51560551635211. The next prime is 51560551635269. The reversal of 51560551635240 is 4253615506515.

It is an interprime number because it is at equal distance from previous prime (51560551635211) and next prime (51560551635269).

It is a self number, because there is not a number n which added to its sum of digits gives 51560551635240.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 16280564137 + ... + 16280567303.

It is an arithmetic number, because the mean of its divisors is an integer number (291089593080).

Almost surely, 2^{51560551635240} 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 51560551635240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83833802807040).

51560551635240 is an abundant number, since it is smaller than the sum of its proper divisors (116107053978840).

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

51560551635240 is a wasteful number, since it uses less digits than its factorization.

51560551635240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442 (or 3358 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 48.

The spelling of 51560551635240 in words is "fifty-one trillion, five hundred sixty billion, five hundred fifty-one million, six hundred thirty-five thousand, two hundred forty".