47705489747 has 2 divisors, whose sum is σ = 47705489748. Its totient is φ = 47705489746.

The previous prime is 47705489719. The next prime is 47705489759. The reversal of 47705489747 is 74798450774.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47705489747 is a prime.

It is a super-2 number, since 2×47705489747² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47705489747.

It is not a weakly prime, because it can be changed into another prime (47705489717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23852744873 + 23852744874.

It is an arithmetic number, because the mean of its divisors is an integer number (23852744874).

Almost surely, 2^47705489747 is an apocalyptic number.

47705489747 is a deficient number, since it is larger than the sum of its proper divisors (1).

47705489747 is an equidigital number, since it uses as much as digits as its factorization.

47705489747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55319040, while the sum is 62.

The spelling of 47705489747 in words is "forty-seven billion, seven hundred five million, four hundred eighty-nine thousand, seven hundred forty-seven".