47517611623 has 2 divisors, whose sum is σ = 47517611624. Its totient is φ = 47517611622.

The previous prime is 47517611597. The next prime is 47517611641. The reversal of 47517611623 is 32611671574.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47517611623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47517611623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47517611023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23758805811 + 23758805812.

It is an arithmetic number, because the mean of its divisors is an integer number (23758805812).

Almost surely, 2^47517611623 is an apocalyptic number.

47517611623 is a deficient number, since it is larger than the sum of its proper divisors (1).

47517611623 is an equidigital number, since it uses as much as digits as its factorization.

47517611623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The spelling of 47517611623 in words is "forty-seven billion, five hundred seventeen million, six hundred eleven thousand, six hundred twenty-three".