4971573780497 has 2 divisors, whose sum is σ = 4971573780498. Its totient is φ = 4971573780496.

The previous prime is 4971573780487. The next prime is 4971573780577. The reversal of 4971573780497 is 7940873751794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4628861887441 + 342711893056 = 2151479^2 + 585416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4971573780497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4971573780497.

It is not a weakly prime, because it can be changed into another prime (4971573780487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2485786890248 + 2485786890249.

It is an arithmetic number, because the mean of its divisors is an integer number (2485786890249).

Almost surely, 2^{4971573780497} is an apocalyptic number.

It is an amenable number.

4971573780497 is a deficient number, since it is larger than the sum of its proper divisors (1).

4971573780497 is an equidigital number, since it uses as much as digits as its factorization.

4971573780497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373403520, while the sum is 71.

The spelling of 4971573780497 in words is "four trillion, nine hundred seventy-one billion, five hundred seventy-three million, seven hundred eighty thousand, four hundred ninety-seven".