1061161656 has 32 divisors (see below), whose sum is σ = 2662362000. Its totient is φ = 352459520.

The previous prime is 1061161639. The next prime is 1061161679. The reversal of 1061161656 is 6561611601.

It is a super-2 number, since 2×1061161656² = 2252128120329324672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71931 + ... + 85418.

Almost surely, 2^1061161656 is an apocalyptic number.

It is an amenable number.

1061161656 is an abundant number, since it is smaller than the sum of its proper divisors (1601200344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1061161656 is a wasteful number, since it uses less digits than its factorization.

1061161656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157639 (or 157635 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1061161656 is about 32575.4762973621. The cubic root of 1061161656 is about 1019.9851516485.

The spelling of 1061161656 in words is "one billion, sixty-one million, one hundred sixty-one thousand, six hundred fifty-six".