2098386913561 has 9 divisors (see below), whose sum is σ = 2111577034581. Its totient is φ = 2085278704092.

The previous prime is 2098386913541. The next prime is 2098386913577. The reversal of 2098386913561 is 1653196838902.

The square root of 2098386913561 is 1448581.

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

It is not a de Polignac number, because 2098386913561 - 2³⁵ = 2064027175193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2098386913561.

It is not an unprimeable number, because it can be changed into a prime (2098386913541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 236114260 + ... + 236123146.

It is an arithmetic number, because the mean of its divisors is an integer number (234619670509).

Almost surely, 2^{2098386913561} is an apocalyptic number.

2098386913561 is the 1448581-st square number.

2098386913561 is the 724291-st centered octagonal number.

It is an amenable number.

2098386913561 is a deficient number, since it is larger than the sum of its proper divisors (13190121020).

2098386913561 is an frugal number, since it uses more digits than its factorization.

2098386913561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18100 (or 9050 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 61.

The spelling of 2098386913561 in words is "two trillion, ninety-eight billion, three hundred eighty-six million, nine hundred thirteen thousand, five hundred sixty-one".