11520642641455 has 4 divisors (see below), whose sum is σ = 13824771169752. Its totient is φ = 9216514113160.

The previous prime is 11520642641449. The next prime is 11520642641483. The reversal of 11520642641455 is 55414624602511.

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

It is not a de Polignac number, because 11520642641455 - 2⁵ = 11520642641423 is a prime.

It is a super-2 number, since 2×11520642641455² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152064264141 + ... + 1152064264150.

It is an arithmetic number, because the mean of its divisors is an integer number (3456192792438).

Almost surely, 2^{11520642641455} is an apocalyptic number.

11520642641455 is a deficient number, since it is larger than the sum of its proper divisors (2304128528297).

11520642641455 is an equidigital number, since it uses as much as digits as its factorization.

11520642641455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304128528296.

The product of its (nonzero) digits is 1152000, while the sum is 46.

The spelling of 11520642641455 in words is "eleven trillion, five hundred twenty billion, six hundred forty-two million, six hundred forty-one thousand, four hundred fifty-five".