947443505579 has 2 divisors, whose sum is σ = 947443505580. Its totient is φ = 947443505578.

The previous prime is 947443505551. The next prime is 947443505629. The reversal of 947443505579 is 975505344749.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 947443505579 - 2¹² = 947443501483 is a prime.

It is not a weakly prime, because it can be changed into another prime (947443505509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473721752789 + 473721752790.

It is an arithmetic number, because the mean of its divisors is an integer number (473721752790).

Almost surely, 2^947443505579 is an apocalyptic number.

947443505579 is a deficient number, since it is larger than the sum of its proper divisors (1).

947443505579 is an equidigital number, since it uses as much as digits as its factorization.

947443505579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256000, while the sum is 62.

The spelling of 947443505579 in words is "nine hundred forty-seven billion, four hundred forty-three million, five hundred five thousand, five hundred seventy-nine".