11520275655 has 16 divisors (see below), whose sum is σ = 21065647104. Its totient is φ = 5266411680.

The previous prime is 11520275633. The next prime is 11520275677. The reversal of 11520275655 is 55657202511.

It is an interprime number because it is at equal distance from previous prime (11520275633) and next prime (11520275677).

It is not a de Polignac number, because 11520275655 - 2⁸ = 11520275399 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 54858351 + ... + 54858560.

It is an arithmetic number, because the mean of its divisors is an integer number (1316602944).

Almost surely, 2^11520275655 is an apocalyptic number.

11520275655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11520275655 is a deficient number, since it is larger than the sum of its proper divisors (9545371449).

11520275655 is a wasteful number, since it uses less digits than its factorization.

11520275655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109716926.

The product of its (nonzero) digits is 105000, while the sum is 39.

The spelling of 11520275655 in words is "eleven billion, five hundred twenty million, two hundred seventy-five thousand, six hundred fifty-five".