20606056547 has 2 divisors, whose sum is σ = 20606056548. Its totient is φ = 20606056546.

The previous prime is 20606056519. The next prime is 20606056553. The reversal of 20606056547 is 74565060602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20606056547 - 2⁶ = 20606056483 is a prime.

It is not a weakly prime, because it can be changed into another prime (20606056147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10303028273 + 10303028274.

It is an arithmetic number, because the mean of its divisors is an integer number (10303028274).

Almost surely, 2^20606056547 is an apocalyptic number.

20606056547 is a deficient number, since it is larger than the sum of its proper divisors (1).

20606056547 is an equidigital number, since it uses as much as digits as its factorization.

20606056547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 20606056547 in words is "twenty billion, six hundred six million, fifty-six thousand, five hundred forty-seven".