53051780538 has 48 divisors (see below), whose sum is σ = 116367451200. Its totient is φ = 17466470208.

The previous prime is 53051780513. The next prime is 53051780599. The reversal of 53051780538 is 83508715035.

53051780538 is a `hidden beast` number, since 5 + 3 + 0 + 517 + 80 + 53 + 8 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53051780493 and 53051780502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 436681 + ... + 544787.

It is an arithmetic number, because the mean of its divisors is an integer number (2424321900).

Almost surely, 2^53051780538 is an apocalyptic number.

53051780538 is an abundant number, since it is smaller than the sum of its proper divisors (63315670662).

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

53051780538 is a wasteful number, since it uses less digits than its factorization.

53051780538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108451 (or 108448 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 53051780538 in words is "fifty-three billion, fifty-one million, seven hundred eighty thousand, five hundred thirty-eight".