47809473497 has 2 divisors, whose sum is σ = 47809473498. Its totient is φ = 47809473496.

The previous prime is 47809473493. The next prime is 47809473529. The reversal of 47809473497 is 79437490874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29604987721 + 18204485776 = 172061^2 + 134924^2 .

It is a cyclic number.

It is not a de Polignac number, because 47809473497 - 2² = 47809473493 is a prime.

It is not a weakly prime, because it can be changed into another prime (47809473493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23904736748 + 23904736749.

It is an arithmetic number, because the mean of its divisors is an integer number (23904736749).

Almost surely, 2^47809473497 is an apocalyptic number.

It is an amenable number.

47809473497 is a deficient number, since it is larger than the sum of its proper divisors (1).

47809473497 is an equidigital number, since it uses as much as digits as its factorization.

47809473497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42674688, while the sum is 62.

The spelling of 47809473497 in words is "forty-seven billion, eight hundred nine million, four hundred seventy-three thousand, four hundred ninety-seven".