2947747394057 has 2 divisors, whose sum is σ = 2947747394058. Its totient is φ = 2947747394056.

The previous prime is 2947747393999. The next prime is 2947747394069. The reversal of 2947747394057 is 7504937477492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2811135102736 + 136612291321 = 1676644^2 + 369611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2947747394057 is a prime.

It is not a weakly prime, because it can be changed into another prime (2947747394077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1473873697028 + 1473873697029.

It is an arithmetic number, because the mean of its divisors is an integer number (1473873697029).

Almost surely, 2^{2947747394057} is an apocalyptic number.

It is an amenable number.

2947747394057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2947747394057 is an equidigital number, since it uses as much as digits as its factorization.

2947747394057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373403520, while the sum is 68.

The spelling of 2947747394057 in words is "two trillion, nine hundred forty-seven billion, seven hundred forty-seven million, three hundred ninety-four thousand, fifty-seven".