47156318669 has 2 divisors, whose sum is σ = 47156318670. Its totient is φ = 47156318668.

The previous prime is 47156318647. The next prime is 47156318771. The reversal of 47156318669 is 96681365174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43248193444 + 3908125225 = 207962^2 + 62515^2 .

It is a cyclic number.

It is not a de Polignac number, because 47156318669 - 2⁸ = 47156318413 is a prime.

It is a super-2 number, since 2×47156318669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47156318609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23578159334 + 23578159335.

It is an arithmetic number, because the mean of its divisors is an integer number (23578159335).

Almost surely, 2^47156318669 is an apocalyptic number.

It is an amenable number.

47156318669 is a deficient number, since it is larger than the sum of its proper divisors (1).

47156318669 is an equidigital number, since it uses as much as digits as its factorization.

47156318669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 56.

The spelling of 47156318669 in words is "forty-seven billion, one hundred fifty-six million, three hundred eighteen thousand, six hundred sixty-nine".