20284440006461 has 2 divisors, whose sum is σ = 20284440006462. Its totient is φ = 20284440006460.

The previous prime is 20284440006407. The next prime is 20284440006547. The reversal of 20284440006461 is 16460004448202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20050522683961 + 233917322500 = 4477781^2 + 483650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20284440006461 is a prime.

It is a super-2 number, since 2×20284440006461² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20284440002461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10142220003230 + 10142220003231.

It is an arithmetic number, because the mean of its divisors is an integer number (10142220003231).

Almost surely, 2^{20284440006461} is an apocalyptic number.

It is an amenable number.

20284440006461 is a deficient number, since it is larger than the sum of its proper divisors (1).

20284440006461 is an equidigital number, since it uses as much as digits as its factorization.

20284440006461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294912, while the sum is 41.

The spelling of 20284440006461 in words is "twenty trillion, two hundred eighty-four billion, four hundred forty million, six thousand, four hundred sixty-one".