53538866812440 has 96 divisors (see below), whose sum is σ = 174008397167280. Its totient is φ = 14276450224896.

The previous prime is 53538866812433. The next prime is 53538866812513. The reversal of 53538866812440 is 4421866883535.

53538866812440 is a `hidden beast` number, since 5 + 3 + 5 + 38 + 86 + 6 + 81 + 2 + 440 = 666.

It is a super-2 number, since 2×53538866812440² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5870407 + ... + 11897033.

Almost surely, 2^{53538866812440} is an apocalyptic number.

It is an amenable number.

53538866812440 is an abundant number, since it is smaller than the sum of its proper divisors (120469530354840).

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

53538866812440 is a wasteful number, since it uses less digits than its factorization.

53538866812440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051321 (or 6051314 counting only the distinct ones).

The product of its (nonzero) digits is 132710400, while the sum is 63.

The spelling of 53538866812440 in words is "fifty-three trillion, five hundred thirty-eight billion, eight hundred sixty-six million, eight hundred twelve thousand, four hundred forty".