49517071609 has 2 divisors, whose sum is σ = 49517071610. Its totient is φ = 49517071608.

The previous prime is 49517071517. The next prime is 49517071631. The reversal of 49517071609 is 90617071594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33355543225 + 16161528384 = 182635^2 + 127128^2 .

It is a cyclic number.

It is not a de Polignac number, because 49517071609 - 2¹³ = 49517063417 is a prime.

It is not a weakly prime, because it can be changed into another prime (49517071679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24758535804 + 24758535805.

It is an arithmetic number, because the mean of its divisors is an integer number (24758535805).

Almost surely, 2^49517071609 is an apocalyptic number.

It is an amenable number.

49517071609 is a deficient number, since it is larger than the sum of its proper divisors (1).

49517071609 is an equidigital number, since it uses as much as digits as its factorization.

49517071609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 49517071609 in words is "forty-nine billion, five hundred seventeen million, seventy-one thousand, six hundred nine".