47242157189 has 2 divisors, whose sum is σ = 47242157190. Its totient is φ = 47242157188.

The previous prime is 47242157177. The next prime is 47242157197. The reversal of 47242157189 is 98175124274.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30221040964 + 17021116225 = 173842^2 + 130465^2 .

It is a cyclic number.

It is not a de Polignac number, because 47242157189 - 2¹² = 47242153093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47242157119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23621078594 + 23621078595.

It is an arithmetic number, because the mean of its divisors is an integer number (23621078595).

Almost surely, 2^47242157189 is an apocalyptic number.

It is an amenable number.

47242157189 is a deficient number, since it is larger than the sum of its proper divisors (1).

47242157189 is an equidigital number, since it uses as much as digits as its factorization.

47242157189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 50.

The spelling of 47242157189 in words is "forty-seven billion, two hundred forty-two million, one hundred fifty-seven thousand, one hundred eighty-nine".