49017517217 has 2 divisors, whose sum is σ = 49017517218. Its totient is φ = 49017517216.

The previous prime is 49017517193. The next prime is 49017517229. The reversal of 49017517217 is 71271571094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49017517201 + 16 = 221399^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 49017517217 - 2¹² = 49017513121 is a prime.

It is not a weakly prime, because it can be changed into another prime (49017517117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24508758608 + 24508758609.

It is an arithmetic number, because the mean of its divisors is an integer number (24508758609).

Almost surely, 2^49017517217 is an apocalyptic number.

It is an amenable number.

49017517217 is a deficient number, since it is larger than the sum of its proper divisors (1).

49017517217 is an equidigital number, since it uses as much as digits as its factorization.

49017517217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123480, while the sum is 44.

The spelling of 49017517217 in words is "forty-nine billion, seventeen million, five hundred seventeen thousand, two hundred seventeen".