8842409957161 has 9 divisors (see below), whose sum is σ = 9719379129943. Its totient is φ = 8038524770320.

The previous prime is 8842409957119. The next prime is 8842409957203. The reversal of 8842409957161 is 1617599042488.

The square root of 8842409957161 is 2973619.

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

It is an interprime number because it is at equal distance from previous prime (8842409957119) and next prime (8842409957203).

It can be written as a sum of positive squares in only one way, i.e., 1652718507561 + 7189691449600 = 1285581^2 + 2681360^2 .

It is not a de Polignac number, because 8842409957161 - 2¹³ = 8842409948969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8842409957093 and 8842409957102.

It is not an unprimeable number, because it can be changed into a prime (8842409957261) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 32574645 + ... + 32844973.

Almost surely, 2^{8842409957161} is an apocalyptic number.

8842409957161 is the 2973619-th square number.

8842409957161 is the 1486810-th centered octagonal number.

It is an amenable number.

8842409957161 is a deficient number, since it is larger than the sum of its proper divisors (876969172782).

8842409957161 is an frugal number, since it uses more digits than its factorization.

8842409957161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540680 (or 270340 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 64.

Multiplying 8842409957161 by its sum of digits (64), we get a square (565914237258304 = 23788952²).

The spelling of 8842409957161 in words is "eight trillion, eight hundred forty-two billion, four hundred nine million, nine hundred fifty-seven thousand, one hundred sixty-one".