20413517147 has 2 divisors, whose sum is σ = 20413517148. Its totient is φ = 20413517146.

The previous prime is 20413517071. The next prime is 20413517171. The reversal of 20413517147 is 74171531402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20413517147 - 2⁸ = 20413516891 is a prime.

It is not a weakly prime, because it can be changed into another prime (20413217147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206758573 + 10206758574.

It is an arithmetic number, because the mean of its divisors is an integer number (10206758574).

Almost surely, 2^20413517147 is an apocalyptic number.

20413517147 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413517147 is an equidigital number, since it uses as much as digits as its factorization.

20413517147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 20413517147 in words is "twenty billion, four hundred thirteen million, five hundred seventeen thousand, one hundred forty-seven".