1161565100166 has 32 divisors (see below), whose sum is σ = 2424729593088. Its totient is φ = 370263380960.

The previous prime is 1161565100147. The next prime is 1161565100183. The reversal of 1161565100166 is 6610015651611.

It is a super-2 number, since 2×1161565100166² (a number of 25 digits) 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464181 + ... + 1593296.

It is an arithmetic number, because the mean of its divisors is an integer number (75772799784).

Almost surely, 2^{1161565100166} is an apocalyptic number.

1161565100166 is an abundant number, since it is smaller than the sum of its proper divisors (1263164492922).

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

1161565100166 is a wasteful number, since it uses less digits than its factorization.

1161565100166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061596.

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 1161565100166 in words is "one trillion, one hundred sixty-one billion, five hundred sixty-five million, one hundred thousand, one hundred sixty-six".