1101998055456 has 72 divisors (see below), whose sum is σ = 3134483709084. Its totient is φ = 367253360640.

The previous prime is 1101998055449. The next prime is 1101998055467. The reversal of 1101998055456 is 6545508991011.

It is a happy number.

1101998055456 is a `hidden beast` number, since 1 + 1 + 0 + 1 + 9 + 9 + 80 + 554 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1100157645456 + 1840410000 = 1048884^2 + 42900^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 930396 + ... + 1752036.

Almost surely, 2^{1101998055456} is an apocalyptic number.

1101998055456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1101998055456 is an abundant number, since it is smaller than the sum of its proper divisors (2032485653628).

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

1101998055456 is a wasteful number, since it uses less digits than its factorization.

1101998055456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826314 (or 826303 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 54.

The spelling of 1101998055456 in words is "one trillion, one hundred one billion, nine hundred ninety-eight million, fifty-five thousand, four hundred fifty-six".