53765393578668 has 192 divisors, whose sum is σ = 147108034483200. Its totient is φ = 16934647242240.

The previous prime is 53765393578511. The next prime is 53765393578739. The reversal of 53765393578668 is 86687539356735.

53765393578668 is a `hidden beast` number, since 5 + 3 + 7 + 6 + 5 + 39 + 3 + 578 + 6 + 6 + 8 = 666.

53765393578668 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1251704680 + ... + 1251747632.

It is an arithmetic number, because the mean of its divisors is an integer number (766187679600).

Almost surely, 2^{53765393578668} 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 53765393578668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73554017241600).

53765393578668 is an abundant number, since it is smaller than the sum of its proper divisors (93342640904532).

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

53765393578668 is a wasteful number, since it uses less digits than its factorization.

53765393578668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44549 (or 44541 counting only the distinct ones).

The product of its digits is 20575296000, while the sum is 81.

The spelling of 53765393578668 in words is "fifty-three trillion, seven hundred sixty-five billion, three hundred ninety-three million, five hundred seventy-eight thousand, six hundred sixty-eight".