1161655051211 has 8 divisors (see below), whose sum is σ = 1212181926144. Its totient is φ = 1111129854120.

The previous prime is 1161655051157. The next prime is 1161655051213. The reversal of 1161655051211 is 1121505561611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161655051211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161655051213) 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 7 ways as a sum of consecutive naturals, for example, 1114796 + ... + 1888406.

It is an arithmetic number, because the mean of its divisors is an integer number (151522740768).

Almost surely, 2^{1161655051211} is an apocalyptic number.

1161655051211 is a deficient number, since it is larger than the sum of its proper divisors (50526874933).

1161655051211 is an equidigital number, since it uses as much as digits as its factorization.

1161655051211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838921.

The product of its (nonzero) digits is 9000, while the sum is 35.

The spelling of 1161655051211 in words is "one trillion, one hundred sixty-one billion, six hundred fifty-five million, fifty-one thousand, two hundred eleven".