73985522544 has 30 divisors (see below), whose sum is σ = 207056705856. Its totient is φ = 24661840800.

The previous prime is 73985522543. The next prime is 73985522551. The reversal of 73985522544 is 44522558937.

73985522544 is a `hidden beast` number, since 7 + 3 + 98 + 5 + 5 + 2 + 2 + 544 = 666.

It is a super-2 number, since 2×73985522544² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73985522543) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 256894032 + ... + 256894319.

Almost surely, 2^73985522544 is an apocalyptic number.

It is an amenable number.

73985522544 is an abundant number, since it is smaller than the sum of its proper divisors (133071183312).

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

73985522544 is a wasteful number, since it uses less digits than its factorization.

73985522544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513788365 (or 513788356 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 73985522544 in words is "seventy-three billion, nine hundred eighty-five million, five hundred twenty-two thousand, five hundred forty-four".