8539477848641 has 4 divisors (see below), whose sum is σ = 8539522456512. Its totient is φ = 8539433240772.

The previous prime is 8539477848637. The next prime is 8539477848653. The reversal of 8539477848641 is 1468487749358.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8539477848641 - 2² = 8539477848637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8539477848691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22015541 + ... + 22400066.

It is an arithmetic number, because the mean of its divisors is an integer number (2134880614128).

Almost surely, 2^{8539477848641} is an apocalyptic number.

It is an amenable number.

8539477848641 is a deficient number, since it is larger than the sum of its proper divisors (44607871).

8539477848641 is a wasteful number, since it uses less digits than its factorization.

8539477848641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44607870.

The product of its digits is 1300561920, while the sum is 74.

The spelling of 8539477848641 in words is "eight trillion, five hundred thirty-nine billion, four hundred seventy-seven million, eight hundred forty-eight thousand, six hundred forty-one".