539552067840 has 864 divisors, whose sum is σ = 2007128987136. Its totient is φ = 138669096960.

The previous prime is 539552067823. The next prime is 539552067871. The reversal of 539552067840 is 48760255935.

539552067840 is a `hidden beast` number, since 5 + 3 + 9 + 5 + 520 + 6 + 78 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a super-2 number, since 2×539552067840² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1990966905 + ... + 1990967175.

Almost surely, 2^539552067840 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 539552067840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003564493568).

539552067840 is an abundant number, since it is smaller than the sum of its proper divisors (1467576919296).

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

539552067840 is a wasteful number, since it uses less digits than its factorization.

539552067840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 539552067840 in words is "five hundred thirty-nine billion, five hundred fifty-two million, sixty-seven thousand, eight hundred forty".