1099553571216 has 45 divisors (see below), whose sum is σ = 3077258057419. Its totient is φ = 366513662688.

The previous prime is 1099553571211. The next prime is 1099553571239. The reversal of 1099553571216 is 6121753559901.

It is a happy number.

The square root of 1099553571216 is 1048596.

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

1099553571216 is a `hidden beast` number, since 1 + 0 + 9 + 9 + 5 + 53 + 571 + 2 + 16 = 666.

It is a super-3 number, since 3×1099553571216³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099553571211) 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, 12539461 + ... + 12626843.

Almost surely, 2^{1099553571216} is an apocalyptic number.

1099553571216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1099553571216 is the 1048596-th square number.

It is an amenable number.

1099553571216 is an abundant number, since it is smaller than the sum of its proper divisors (1977704486203).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1099553571216 is an frugal number, since it uses more digits than its factorization.

1099553571216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174780 (or 87388 counting only the distinct ones).

The product of its (nonzero) digits is 2551500, while the sum is 54.

The spelling of 1099553571216 in words is "one trillion, ninety-nine billion, five hundred fifty-three million, five hundred seventy-one thousand, two hundred sixteen".