20461034415247 has 2 divisors, whose sum is σ = 20461034415248. Its totient is φ = 20461034415246.

The previous prime is 20461034415229. The next prime is 20461034415293. The reversal of 20461034415247 is 74251443016402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20461034415247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20461034415947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10230517207623 + 10230517207624.

It is an arithmetic number, because the mean of its divisors is an integer number (10230517207624).

Almost surely, 2^{20461034415247} is an apocalyptic number.

20461034415247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20461034415247 is an equidigital number, since it uses as much as digits as its factorization.

20461034415247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 20461034415247 in words is "twenty trillion, four hundred sixty-one billion, thirty-four million, four hundred fifteen thousand, two hundred forty-seven".