511542303947 has 2 divisors, whose sum is σ = 511542303948. Its totient is φ = 511542303946.

The previous prime is 511542303913. The next prime is 511542303973. The reversal of 511542303947 is 749303245115.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 511542303947 - 2⁸ = 511542303691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 511542303898 and 511542303907.

It is not a weakly prime, because it can be changed into another prime (511542305947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255771151973 + 255771151974.

It is an arithmetic number, because the mean of its divisors is an integer number (255771151974).

Almost surely, 2^511542303947 is an apocalyptic number.

511542303947 is a deficient number, since it is larger than the sum of its proper divisors (1).

511542303947 is an equidigital number, since it uses as much as digits as its factorization.

511542303947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 511542303947 in words is "five hundred eleven billion, five hundred forty-two million, three hundred three thousand, nine hundred forty-seven".