20101721875363 has 2 divisors, whose sum is σ = 20101721875364. Its totient is φ = 20101721875362.

The previous prime is 20101721875357. The next prime is 20101721875369. The reversal of 20101721875363 is 36357812710102.

It is a balanced prime because it is at equal distance from previous prime (20101721875357) and next prime (20101721875369).

It is a cyclic number.

It is not a de Polignac number, because 20101721875363 - 2⁵ = 20101721875331 is a prime.

It is not a weakly prime, because it can be changed into another prime (20101721875369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050860937681 + 10050860937682.

It is an arithmetic number, because the mean of its divisors is an integer number (10050860937682).

Almost surely, 2^{20101721875363} is an apocalyptic number.

20101721875363 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101721875363 is an equidigital number, since it uses as much as digits as its factorization.

20101721875363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 20101721875363 in words is "twenty trillion, one hundred one billion, seven hundred twenty-one million, eight hundred seventy-five thousand, three hundred sixty-three".