11555204865711 has 16 divisors (see below), whose sum is σ = 16693881004416. Its totient is φ = 7067270173536.

The previous prime is 11555204865569. The next prime is 11555204865727. The reversal of 11555204865711 is 11756840255511.

It is not a de Polignac number, because 11555204865711 - 2²² = 11555200671407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11555204865731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 908850405 + ... + 908863118.

It is an arithmetic number, because the mean of its divisors is an integer number (1043367562776).

Almost surely, 2^{11555204865711} is an apocalyptic number.

11555204865711 is a deficient number, since it is larger than the sum of its proper divisors (5138676138705).

11555204865711 is a wasteful number, since it uses less digits than its factorization.

11555204865711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817713702.

The product of its (nonzero) digits is 1680000, while the sum is 51.

The spelling of 11555204865711 in words is "eleven trillion, five hundred fifty-five billion, two hundred four million, eight hundred sixty-five thousand, seven hundred eleven".