9155120702049 has 81 divisors (see below), whose sum is σ = 15503061215187. Its totient is φ = 5191013102688.

The previous prime is 9155120702027. The next prime is 9155120702051. The reversal of 9155120702049 is 9402070215519.

The square root of 9155120702049 is 3025743.

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

9155120702049 is a `hidden beast` number, since 9 + 1 + 5 + 512 + 0 + 70 + 20 + 49 = 666.

9155120702049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1072585421649 + 8082535280400 = 1035657^2 + 2842980^2 .

It is not a de Polignac number, because 9155120702049 - 2¹⁵ = 9155120669281 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9155120701995 and 9155120702013.

It is not an unprimeable number, because it can be changed into a prime (9155120700049) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 9467549364 + ... + 9467550330.

Almost surely, 2^{9155120702049} is an apocalyptic number.

9155120702049 is the 3025743-rd square number.

9155120702049 is the 1512872-nd centered octagonal number.

It is an amenable number.

9155120702049 is a deficient number, since it is larger than the sum of its proper divisors (6347940513138).

9155120702049 is an frugal number, since it uses more digits than its factorization.

9155120702049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

It can be divided in two parts, 91551 and 20702049, that added together give a square (20793600 = 4560²).

The spelling of 9155120702049 in words is "nine trillion, one hundred fifty-five billion, one hundred twenty million, seven hundred two thousand, forty-nine".