47643430657 has 2 divisors, whose sum is σ = 47643430658. Its totient is φ = 47643430656.

The previous prime is 47643430603. The next prime is 47643430711. The reversal of 47643430657 is 75603434674.

It is a balanced prime because it is at equal distance from previous prime (47643430603) and next prime (47643430711).

It can be written as a sum of positive squares in only one way, i.e., 47642229441 + 1201216 = 218271^2 + 1096^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47643430657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47643430657.

It is not a weakly prime, because it can be changed into another prime (47643430957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23821715328 + 23821715329.

It is an arithmetic number, because the mean of its divisors is an integer number (23821715329).

Almost surely, 2^47643430657 is an apocalyptic number.

It is an amenable number.

47643430657 is a deficient number, since it is larger than the sum of its proper divisors (1).

47643430657 is an equidigital number, since it uses as much as digits as its factorization.

47643430657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 49.

The spelling of 47643430657 in words is "forty-seven billion, six hundred forty-three million, four hundred thirty thousand, six hundred fifty-seven".