1181131955079 has 32 divisors (see below), whose sum is σ = 1711387238400. Its totient is φ = 721837046880.

The previous prime is 1181131955053. The next prime is 1181131955099. The reversal of 1181131955079 is 9705591311811.

It is not a de Polignac number, because 1181131955079 - 2¹⁶ = 1181131889543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181131955009) 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 31 ways as a sum of consecutive naturals, for example, 19511032 + ... + 19571474.

It is an arithmetic number, because the mean of its divisors is an integer number (53480851200).

Almost surely, 2^{1181131955079} is an apocalyptic number.

1181131955079 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1181131955079 is a deficient number, since it is larger than the sum of its proper divisors (530255283321).

1181131955079 is a wasteful number, since it uses less digits than its factorization.

1181131955079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71555.

The product of its (nonzero) digits is 340200, while the sum is 51.

The spelling of 1181131955079 in words is "one trillion, one hundred eighty-one billion, one hundred thirty-one million, nine hundred fifty-five thousand, seventy-nine".