1155210550544 has 10 divisors (see below), whose sum is σ = 2238220441710. Its totient is φ = 577605275264.

The previous prime is 1155210550541. The next prime is 1155210550577. The reversal of 1155210550544 is 4450550125511.

It can be written as a sum of positive squares in only one way, i.e., 973205926144 + 182004624400 = 986512^2 + 426620^2 .

It is a super-2 number, since 2×1155210550544² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1155210550498 and 1155210550507.

It is not an unprimeable number, because it can be changed into a prime (1155210550541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36100329689 + ... + 36100329720.

It is an arithmetic number, because the mean of its divisors is an integer number (223822044171).

Almost surely, 2^{1155210550544} is an apocalyptic number.

It is an amenable number.

1155210550544 is a deficient number, since it is larger than the sum of its proper divisors (1083009891166).

1155210550544 is an equidigital number, since it uses as much as digits as its factorization.

1155210550544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72200659417 (or 72200659411 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 38.

The spelling of 1155210550544 in words is "one trillion, one hundred fifty-five billion, two hundred ten million, five hundred fifty thousand, five hundred forty-four".