1163666641511 has 32 divisors (see below), whose sum is σ = 1310013139968. Its totient is φ = 1024571645440.

The previous prime is 1163666641439. The next prime is 1163666641519. The reversal of 1163666641511 is 1151466663611.

It is a cyclic number.

It is not a de Polignac number, because 1163666641511 - 2¹⁸ = 1163666379367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163666641519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52707971 + ... + 52730043.

It is an arithmetic number, because the mean of its divisors is an integer number (40937910624).

Almost surely, 2^{1163666641511} is an apocalyptic number.

1163666641511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1163666641511 is a deficient number, since it is larger than the sum of its proper divisors (146346498457).

1163666641511 is a wasteful number, since it uses less digits than its factorization.

1163666641511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23191.

The product of its digits is 466560, while the sum is 47.

The spelling of 1163666641511 in words is "one trillion, one hundred sixty-three billion, six hundred sixty-six million, six hundred forty-one thousand, five hundred eleven".