1098561058893 has 6 divisors (see below), whose sum is σ = 1586810418414. Its totient is φ = 732374039256.

The previous prime is 1098561058891. The next prime is 1098561058901. The reversal of 1098561058893 is 3988501658901.

1098561058893 is a `hidden beast` number, since 1 + 0 + 9 + 8 + 5 + 610 + 5 + 8 + 8 + 9 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1064336798889 + 34224260004 = 1031667^2 + 184998^2 .

It is not a de Polignac number, because 1098561058893 - 2¹ = 1098561058891 is a prime.

It is a super-2 number, since 2×1098561058893² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1098561058893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098561058891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61031169930 + ... + 61031169947.

It is an arithmetic number, because the mean of its divisors is an integer number (264468403069).

Almost surely, 2^{1098561058893} is an apocalyptic number.

It is an amenable number.

1098561058893 is a deficient number, since it is larger than the sum of its proper divisors (488249359521).

1098561058893 is a wasteful number, since it uses less digits than its factorization.

1098561058893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122062339883 (or 122062339880 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 63.

The spelling of 1098561058893 in words is "one trillion, ninety-eight billion, five hundred sixty-one million, fifty-eight thousand, eight hundred ninety-three".