1098653981997 has 64 divisors (see below), whose sum is σ = 1732449116160. Its totient is φ = 610538860800.

The previous prime is 1098653981983. The next prime is 1098653982007. The reversal of 1098653981997 is 7991893568901.

It is not a de Polignac number, because 1098653981997 - 2⁴ = 1098653981981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098653981917) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76092663 + ... + 76107099.

It is an arithmetic number, because the mean of its divisors is an integer number (27069517440).

Almost surely, 2^{1098653981997} is an apocalyptic number.

It is an amenable number.

1098653981997 is a deficient number, since it is larger than the sum of its proper divisors (633795134163).

1098653981997 is a wasteful number, since it uses less digits than its factorization.

1098653981997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15634.

The product of its (nonzero) digits is 264539520, while the sum is 75.

The spelling of 1098653981997 in words is "one trillion, ninety-eight billion, six hundred fifty-three million, nine hundred eighty-one thousand, nine hundred ninety-seven".