11927539455129 has 9 divisors (see below), whose sum is σ = 17228683067583. Its totient is φ = 7951686062832.

The previous prime is 11927539455109. The next prime is 11927539455157. The reversal of 11927539455129 is 92155493572911.

The square root of 11927539455129 is 3453627.

It is a perfect power (a square), and thus also a powerful number.

11927539455129 is a `hidden beast` number, since 1 + 1 + 9 + 2 + 7 + 53 + 9 + 4 + 551 + 29 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11843763941529 + 83775513600 = 3441477^2 + 289440^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 11927539455129 - 2⁷ = 11927539455001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11927539455109) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9785277 + ... + 10936485.

Almost surely, 2^{11927539455129} is an apocalyptic number.

11927539455129 is the 3453627-th square number.

11927539455129 is the 1726814-th centered octagonal number.

It is an amenable number.

11927539455129 is a deficient number, since it is larger than the sum of its proper divisors (5301143612454).

11927539455129 is an frugal number, since it uses more digits than its factorization.

11927539455129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302424 (or 1151212 counting only the distinct ones).

The product of its digits is 30618000, while the sum is 63.

The spelling of 11927539455129 in words is "eleven trillion, nine hundred twenty-seven billion, five hundred thirty-nine million, four hundred fifty-five thousand, one hundred twenty-nine".