8681421547536 has 80 divisors (see below), whose sum is σ = 22447980023040. Its totient is φ = 2891102064640.

The previous prime is 8681421547433. The next prime is 8681421547537. The reversal of 8681421547536 is 6357451241868.

It is a super-3 number, since 3×8681421547536³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8681421547536.

It is not an unprimeable number, because it can be changed into a prime (8681421547537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252945385 + ... + 252979703.

It is an arithmetic number, because the mean of its divisors is an integer number (280599750288).

Almost surely, 2^{8681421547536} is an apocalyptic number.

It is an amenable number.

8681421547536 is an abundant number, since it is smaller than the sum of its proper divisors (13766558475504).

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

8681421547536 is a wasteful number, since it uses less digits than its factorization.

8681421547536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39104 (or 39098 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 60.

The spelling of 8681421547536 in words is "eight trillion, six hundred eighty-one billion, four hundred twenty-one million, five hundred forty-seven thousand, five hundred thirty-six".