20284440002461 has 2 divisors, whose sum is σ = 20284440002462. Its totient is φ = 20284440002460.

The previous prime is 20284440002389. The next prime is 20284440002471. The reversal of 20284440002461 is 16420004448202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11384921964025 + 8899518038436 = 3374155^2 + 2983206^2 .

It is a cyclic number.

It is not a de Polignac number, because 20284440002461 - 2²⁵ = 20284406448029 is a prime.

It is a super-2 number, since 2×20284440002461² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20284440002461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20284440002471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10142220001230 + 10142220001231.

It is an arithmetic number, because the mean of its divisors is an integer number (10142220001231).

Almost surely, 2^{20284440002461} is an apocalyptic number.

It is an amenable number.

20284440002461 is a deficient number, since it is larger than the sum of its proper divisors (1).

20284440002461 is an equidigital number, since it uses as much as digits as its factorization.

20284440002461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98304, while the sum is 37.

The spelling of 20284440002461 in words is "twenty trillion, two hundred eighty-four billion, four hundred forty million, two thousand, four hundred sixty-one".