20101058947 has 2 divisors, whose sum is σ = 20101058948. Its totient is φ = 20101058946.

The previous prime is 20101058921. The next prime is 20101058951. The reversal of 20101058947 is 74985010102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20101058947 is a prime.

It is not a weakly prime, because it can be changed into another prime (20101058917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050529473 + 10050529474.

It is an arithmetic number, because the mean of its divisors is an integer number (10050529474).

Almost surely, 2^20101058947 is an apocalyptic number.

20101058947 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101058947 is an equidigital number, since it uses as much as digits as its factorization.

20101058947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 20101058947 in words is "twenty billion, one hundred one million, fifty-eight thousand, nine hundred forty-seven".