11655955079999 has 4 divisors (see below), whose sum is σ = 11656118553336. Its totient is φ = 11655791606664.

The previous prime is 11655955079947. The next prime is 11655955080031. The reversal of 11655955079999 is 99997055955611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11655955079999 - 2¹² = 11655955075903 is a prime.

It is a super-2 number, since 2×11655955079999² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11655955079929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81629669 + ... + 81772334.

It is an arithmetic number, because the mean of its divisors is an integer number (2914029638334).

Almost surely, 2^{11655955079999} is an apocalyptic number.

11655955079999 is a deficient number, since it is larger than the sum of its proper divisors (163473337).

11655955079999 is an equidigital number, since it uses as much as digits as its factorization.

11655955079999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163473336.

The product of its (nonzero) digits is 1550036250, while the sum is 80.

The spelling of 11655955079999 in words is "eleven trillion, six hundred fifty-five billion, nine hundred fifty-five million, seventy-nine thousand, nine hundred ninety-nine".