20284440006547 has 2 divisors, whose sum is σ = 20284440006548. Its totient is φ = 20284440006546.

The previous prime is 20284440006461. The next prime is 20284440006553. The reversal of 20284440006547 is 74560004448202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20284440006547 - 2²⁷ = 20284305788819 is a prime.

It is a super-2 number, since 2×20284440006547² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20284440006497 and 20284440006506.

It is not a weakly prime, because it can be changed into another prime (20284440000547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10142220003273 + 10142220003274.

It is an arithmetic number, because the mean of its divisors is an integer number (10142220003274).

Almost surely, 2^{20284440006547} is an apocalyptic number.

20284440006547 is a deficient number, since it is larger than the sum of its proper divisors (1).

20284440006547 is an equidigital number, since it uses as much as digits as its factorization.

20284440006547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1720320, while the sum is 46.

The spelling of 20284440006547 in words is "twenty trillion, two hundred eighty-four billion, four hundred forty million, six thousand, five hundred forty-seven".