9809876583481 has 4 divisors (see below), whose sum is σ = 10564482474532. Its totient is φ = 9055270692432.

The previous prime is 9809876583467. The next prime is 9809876583491. The reversal of 9809876583481 is 1843856789089.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3085625994025 + 6724250589456 = 1756595^2 + 2593116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9809876583481 is a prime.

It is a super-2 number, since 2×9809876583481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9809876583398 and 9809876583407.

It is not an unprimeable number, because it can be changed into a prime (9809876583491) 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, 377302945506 + ... + 377302945531.

It is an arithmetic number, because the mean of its divisors is an integer number (2641120618633).

Almost surely, 2^{9809876583481} is an apocalyptic number.

It is an amenable number.

9809876583481 is a deficient number, since it is larger than the sum of its proper divisors (754605891051).

9809876583481 is a wasteful number, since it uses less digits than its factorization.

9809876583481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754605891050.

The product of its (nonzero) digits is 836075520, while the sum is 76.

The spelling of 9809876583481 in words is "nine trillion, eight hundred nine billion, eight hundred seventy-six million, five hundred eighty-three thousand, four hundred eighty-one".