47156318389 has 2 divisors, whose sum is σ = 47156318390. Its totient is φ = 47156318388.

The previous prime is 47156318383. The next prime is 47156318413. The reversal of 47156318389 is 98381365174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36487494289 + 10668824100 = 191017^2 + 103290^2 .

It is a cyclic number.

It is not a de Polignac number, because 47156318389 - 2⁵ = 47156318357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47156318383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23578159194 + 23578159195.

It is an arithmetic number, because the mean of its divisors is an integer number (23578159195).

Almost surely, 2^47156318389 is an apocalyptic number.

It is an amenable number.

47156318389 is a deficient number, since it is larger than the sum of its proper divisors (1).

47156318389 is an equidigital number, since it uses as much as digits as its factorization.

47156318389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 55.

The spelling of 47156318389 in words is "forty-seven billion, one hundred fifty-six million, three hundred eighteen thousand, three hundred eighty-nine".