47390510218691 has 2 divisors, whose sum is σ = 47390510218692. Its totient is φ = 47390510218690.

The previous prime is 47390510218661. The next prime is 47390510218729. The reversal of 47390510218691 is 19681201509374.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47390510218691 is a prime.

It is not a weakly prime, because it can be changed into another prime (47390510218661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23695255109345 + 23695255109346.

It is an arithmetic number, because the mean of its divisors is an integer number (23695255109346).

It is a 1-persistent number, because it is pandigital, but 2⋅47390510218691 = 94781020437382 is not.

Almost surely, 2^{47390510218691} is an apocalyptic number.

47390510218691 is a deficient number, since it is larger than the sum of its proper divisors (1).

47390510218691 is an equidigital number, since it uses as much as digits as its factorization.

47390510218691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 47390510218691 in words is "forty-seven trillion, three hundred ninety billion, five hundred ten million, two hundred eighteen thousand, six hundred ninety-one".