13111555124452 has 6 divisors (see below), whose sum is σ = 22945221467798. Its totient is φ = 6555777562224.

The previous prime is 13111555124419. The next prime is 13111555124453. The reversal of 13111555124452 is 25442155511131.

It can be written as a sum of positive squares in only one way, i.e., 9901746063616 + 3209809060836 = 3146704^2 + 1791594^2 .

It is not an unprimeable number, because it can be changed into a prime (13111555124453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1638944390553 + ... + 1638944390560.

Almost surely, 2^{13111555124452} is an apocalyptic number.

It is an amenable number.

13111555124452 is a deficient number, since it is larger than the sum of its proper divisors (9833666343346).

13111555124452 is a wasteful number, since it uses less digits than its factorization.

13111555124452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277888781117 (or 3277888781115 counting only the distinct ones).

The product of its digits is 120000, while the sum is 40.

The spelling of 13111555124452 in words is "thirteen trillion, one hundred eleven billion, five hundred fifty-five million, one hundred twenty-four thousand, four hundred fifty-two".