1161070332561 has 48 divisors (see below), whose sum is σ = 1780453509120. Its totient is φ = 727527477600.

The previous prime is 1161070332533. The next prime is 1161070332599. The reversal of 1161070332561 is 1652330701611.

1161070332561 is a `hidden beast` number, since 1 + 1 + 61 + 0 + 7 + 0 + 3 + 32 + 561 = 666.

It is not a de Polignac number, because 1161070332561 - 2²⁶ = 1161003223697 is a prime.

It is a super-2 number, since 2×1161070332561² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1161070332661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29865786 + ... + 29904636.

It is an arithmetic number, because the mean of its divisors is an integer number (37092781440).

Almost surely, 2^{1161070332561} is an apocalyptic number.

It is an amenable number.

1161070332561 is a deficient number, since it is larger than the sum of its proper divisors (619383176559).

1161070332561 is a wasteful number, since it uses less digits than its factorization.

1161070332561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41386 (or 41383 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 1161070332561 in words is "one trillion, one hundred sixty-one billion, seventy million, three hundred thirty-two thousand, five hundred sixty-one".