20298169611801 has 9 divisors (see below), whose sum is σ = 29319597851349. Its totient is φ = 13532104063836.

The previous prime is 20298169611767. The next prime is 20298169611803. The reversal of 20298169611801 is 10811696189202.

The square root of 20298169611801 is 4505349.

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

20298169611801 is a `hidden beast` number, since 2 + 0 + 2 + 9 + 8 + 16 + 9 + 611 + 8 + 0 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 20298169611801 - 2³⁹ = 19748413797913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20298169611803) 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, 12765156 + ... + 14266938.

Almost surely, 2^{20298169611801} is an apocalyptic number.

20298169611801 is the 4505349-th square number.

20298169611801 is the 2252675-th centered octagonal number.

It is an amenable number.

20298169611801 is a deficient number, since it is larger than the sum of its proper divisors (9021428239548).

20298169611801 is an frugal number, since it uses more digits than its factorization.

20298169611801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003572 (or 1501786 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 54.

The spelling of 20298169611801 in words is "twenty trillion, two hundred ninety-eight billion, one hundred sixty-nine million, six hundred eleven thousand, eight hundred one".