1098955905056 has 48 divisors (see below), whose sum is σ = 2188234440000. Its totient is φ = 543249324288.

The previous prime is 1098955905043. The next prime is 1098955905059. The reversal of 1098955905056 is 6505095598901.

It is a self number, because there is not a number n which added to its sum of digits gives 1098955905056.

It is not an unprimeable number, because it can be changed into a prime (1098955905059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436445 + ... + 1545443.

It is an arithmetic number, because the mean of its divisors is an integer number (45588217500).

Almost surely, 2^{1098955905056} is an apocalyptic number.

1098955905056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1098955905056 is a deficient number, since it is larger than the sum of its proper divisors (1089278534944).

1098955905056 is a wasteful number, since it uses less digits than its factorization.

1098955905056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109361 (or 1109353 counting only the distinct ones).

The product of its (nonzero) digits is 21870000, while the sum is 62.

The spelling of 1098955905056 in words is "one trillion, ninety-eight billion, nine hundred fifty-five million, nine hundred five thousand, fifty-six".