47678107709 has 2 divisors, whose sum is σ = 47678107710. Its totient is φ = 47678107708.

The previous prime is 47678107679. The next prime is 47678107727. The reversal of 47678107709 is 90770187674.

47678107709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39282050809 + 8396056900 = 198197^2 + 91630^2 .

It is a cyclic number.

It is not a de Polignac number, because 47678107709 - 2⁸ = 47678107453 is a prime.

It is a super-2 number, since 2×47678107709² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47678107109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23839053854 + 23839053855.

It is an arithmetic number, because the mean of its divisors is an integer number (23839053855).

Almost surely, 2^47678107709 is an apocalyptic number.

It is an amenable number.

47678107709 is a deficient number, since it is larger than the sum of its proper divisors (1).

47678107709 is an equidigital number, since it uses as much as digits as its factorization.

47678107709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4148928, while the sum is 56.

The spelling of 47678107709 in words is "forty-seven billion, six hundred seventy-eight million, one hundred seven thousand, seven hundred nine".