8858617653649 has 9 divisors (see below), whose sum is σ = 9410419215547. Its totient is φ = 8337474876064.

The previous prime is 8858617653577. The next prime is 8858617653667. The reversal of 8858617653649 is 9463567168588.

The square root of 8858617653649 is 2976343.

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

It can be written as a sum of positive squares in only one way, i.e., 6896847654225 + 1961769999424 = 2626185^2 + 1400632^2 .

It is not a de Polignac number, because 8858617653649 - 2²⁵ = 8858584099217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8858617653679) 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 8 ways as a sum of consecutive naturals, for example, 50510292 + ... + 50685370.

Almost surely, 2^{8858617653649} is an apocalyptic number.

8858617653649 is the 2976343-rd square number.

8858617653649 is the 1488172-nd centered octagonal number.

It is an amenable number.

8858617653649 is a deficient number, since it is larger than the sum of its proper divisors (551801561898).

8858617653649 is an frugal number, since it uses more digits than its factorization.

8858617653649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350192 (or 175096 counting only the distinct ones).

The product of its digits is 2090188800, while the sum is 76.

The spelling of 8858617653649 in words is "eight trillion, eight hundred fifty-eight billion, six hundred seventeen million, six hundred fifty-three thousand, six hundred forty-nine".