1161155265026 has 8 divisors (see below), whose sum is σ = 1741740320460. Its totient is φ = 580575158208.

The previous prime is 1161155265007. The next prime is 1161155265077. The reversal of 1161155265026 is 6205625511611.

It can be written as a sum of positive squares in 2 ways, for example, as 1147501576225 + 13653688801 = 1071215^2 + 116849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 580931 + ... + 1630886.

Almost surely, 2^{1161155265026} is an apocalyptic number.

1161155265026 is a deficient number, since it is larger than the sum of its proper divisors (580585055434).

1161155265026 is a wasteful number, since it uses less digits than its factorization.

1161155265026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474308.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 1161155265026 in words is "one trillion, one hundred sixty-one billion, one hundred fifty-five million, two hundred sixty-five thousand, twenty-six".