20124300999947 has 2 divisors, whose sum is σ = 20124300999948. Its totient is φ = 20124300999946.

The previous prime is 20124300999877. The next prime is 20124301000049. The reversal of 20124300999947 is 74999900342102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20124300999947 - 2²⁸ = 20124032564491 is a prime.

It is not a weakly prime, because it can be changed into another prime (20124300929947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062150499973 + 10062150499974.

It is an arithmetic number, because the mean of its divisors is an integer number (10062150499974).

Almost surely, 2^{20124300999947} is an apocalyptic number.

20124300999947 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124300999947 is an equidigital number, since it uses as much as digits as its factorization.

20124300999947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 59.

The spelling of 20124300999947 in words is "twenty trillion, one hundred twenty-four billion, three hundred million, nine hundred ninety-nine thousand, nine hundred forty-seven".