47339720639 has 2 divisors, whose sum is σ = 47339720640. Its totient is φ = 47339720638.

The previous prime is 47339720587. The next prime is 47339720641. The reversal of 47339720639 is 93602793374.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47339720639 is a prime.

It is a Sophie Germain prime.

Together with 47339720641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47339720539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23669860319 + 23669860320.

It is an arithmetic number, because the mean of its divisors is an integer number (23669860320).

Almost surely, 2^47339720639 is an apocalyptic number.

47339720639 is a deficient number, since it is larger than the sum of its proper divisors (1).

47339720639 is an equidigital number, since it uses as much as digits as its factorization.

47339720639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5143824, while the sum is 53.

The spelling of 47339720639 in words is "forty-seven billion, three hundred thirty-nine million, seven hundred twenty thousand, six hundred thirty-nine".