8986091377761 has 27 divisors (see below), whose sum is σ = 13010990945043. Its totient is φ = 5976416656080.

The previous prime is 8986091377759. The next prime is 8986091377799. The reversal of 8986091377761 is 1677731906898.

The square root of 8986091377761 is 2997681.

It is a perfect power (a square), and thus also a powerful number.

8986091377761 is a `hidden beast` number, since 8 + 9 + 8 + 609 + 1 + 3 + 7 + 7 + 7 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3570138449361 + 5415952928400 = 1889481^2 + 2327220^2 .

It is not a de Polignac number, because 8986091377761 - 2¹ = 8986091377759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8986091377761.

It is not an unprimeable number, because it can be changed into a prime (8986091373761) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4865235340 + ... + 4865237186.

Almost surely, 2^{8986091377761} is an apocalyptic number.

8986091377761 is the 2997681-st square number.

8986091377761 is the 1498841-st centered octagonal number.

It is an amenable number.

8986091377761 is a deficient number, since it is larger than the sum of its proper divisors (4024899567282).

8986091377761 is an frugal number, since it uses more digits than its factorization.

8986091377761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 192036096, while the sum is 72.

It can be divided in two parts, 898609137 and 7761, that added together give a palindrome (898616898).

The spelling of 8986091377761 in words is "eight trillion, nine hundred eighty-six billion, ninety-one million, three hundred seventy-seven thousand, seven hundred sixty-one".