8691720883044 has 12 divisors (see below), whose sum is σ = 20280682060464. Its totient is φ = 2897240294344.

The previous prime is 8691720883033. The next prime is 8691720883049. The reversal of 8691720883044 is 4403880271968.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×8691720883044² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8691720883049) 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, 362155036782 + ... + 362155036805.

It is an arithmetic number, because the mean of its divisors is an integer number (1690056838372).

Almost surely, 2^{8691720883044} is an apocalyptic number.

It is an amenable number.

8691720883044 is an abundant number, since it is smaller than the sum of its proper divisors (11588961177420).

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

8691720883044 is a wasteful number, since it uses less digits than its factorization.

8691720883044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724310073594 (or 724310073592 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 60.

The spelling of 8691720883044 in words is "eight trillion, six hundred ninety-one billion, seven hundred twenty million, eight hundred eighty-three thousand, forty-four".