47556408509 has 2 divisors, whose sum is σ = 47556408510. Its totient is φ = 47556408508.

The previous prime is 47556408503. The next prime is 47556408563. The reversal of 47556408509 is 90580465574.

47556408509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30968256484 + 16588152025 = 175978^2 + 128795^2 .

It is a cyclic number.

It is not a de Polignac number, because 47556408509 - 2¹⁶ = 47556342973 is a prime.

It is a super-2 number, since 2×47556408509² (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 (47556408503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23778204254 + 23778204255.

It is an arithmetic number, because the mean of its divisors is an integer number (23778204255).

Almost surely, 2^47556408509 is an apocalyptic number.

It is an amenable number.

47556408509 is a deficient number, since it is larger than the sum of its proper divisors (1).

47556408509 is an equidigital number, since it uses as much as digits as its factorization.

47556408509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048000, while the sum is 53.

The spelling of 47556408509 in words is "forty-seven billion, five hundred fifty-six million, four hundred eight thousand, five hundred nine".