1191081864153 has 8 divisors (see below), whose sum is σ = 1588164789088. Its totient is φ = 794026757664.

The previous prime is 1191081864131. The next prime is 1191081864169. The reversal of 1191081864153 is 3514681801911.

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

It is not a de Polignac number, because 1191081864153 - 2²¹ = 1191079767001 is a prime.

It is a super-2 number, since 2×1191081864153² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1191081864103) 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, 6854500 + ... + 7026117.

It is an arithmetic number, because the mean of its divisors is an integer number (198520598636).

Almost surely, 2^{1191081864153} is an apocalyptic number.

It is an amenable number.

1191081864153 is a deficient number, since it is larger than the sum of its proper divisors (397082924935).

1191081864153 is a wasteful number, since it uses less digits than its factorization.

1191081864153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13909223.

The product of its (nonzero) digits is 207360, while the sum is 48.

The spelling of 1191081864153 in words is "one trillion, one hundred ninety-one billion, eighty-one million, eight hundred sixty-four thousand, one hundred fifty-three".