11671756155557 has 8 divisors (see below), whose sum is σ = 11686126874400. Its totient is φ = 11657386059984.

The previous prime is 11671756155487. The next prime is 11671756155601. The reversal of 11671756155557 is 75555165717611.

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-11671756155557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11671756155557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11671756755557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45538319 + ... + 45793907.

It is an arithmetic number, because the mean of its divisors is an integer number (1460765859300).

Almost surely, 2^{11671756155557} is an apocalyptic number.

It is an amenable number.

11671756155557 is a deficient number, since it is larger than the sum of its proper divisors (14370718843).

11671756155557 is an equidigital number, since it uses as much as digits as its factorization.

11671756155557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311635.

The product of its digits is 38587500, while the sum is 62.

The spelling of 11671756155557 in words is "eleven trillion, six hundred seventy-one billion, seven hundred fifty-six million, one hundred fifty-five thousand, five hundred fifty-seven".