20284440006251 has 2 divisors, whose sum is σ = 20284440006252. Its totient is φ = 20284440006250.

The previous prime is 20284440006217. The next prime is 20284440006263. The reversal of 20284440006251 is 15260004448202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20284440006251 is a prime.

It is a super-2 number, since 2×20284440006251² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20284440006751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10142220003125 + 10142220003126.

It is an arithmetic number, because the mean of its divisors is an integer number (10142220003126).

Almost surely, 2^{20284440006251} is an apocalyptic number.

20284440006251 is a deficient number, since it is larger than the sum of its proper divisors (1).

20284440006251 is an equidigital number, since it uses as much as digits as its factorization.

20284440006251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122880, while the sum is 38.

The spelling of 20284440006251 in words is "twenty trillion, two hundred eighty-four billion, four hundred forty million, six thousand, two hundred fifty-one".