5209166513 has 2 divisors, whose sum is σ = 5209166514. Its totient is φ = 5209166512.

The previous prime is 5209166507. The next prime is 5209166527. The reversal of 5209166513 is 3156619025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5076847504 + 132319009 = 71252^2 + 11503^2 .

It is a cyclic number.

It is not a de Polignac number, because 5209166513 - 2⁸ = 5209166257 is a prime.

It is not a weakly prime, because it can be changed into another prime (5209166593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2604583256 + 2604583257.

It is an arithmetic number, because the mean of its divisors is an integer number (2604583257).

Almost surely, 2^5209166513 is an apocalyptic number.

It is an amenable number.

5209166513 is a deficient number, since it is larger than the sum of its proper divisors (1).

5209166513 is an equidigital number, since it uses as much as digits as its factorization.

5209166513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 5209166513 is about 72174.5558559247. Note that the first 3 decimals coincide. The cubic root of 5209166513 is about 1733.4956120707.

The spelling of 5209166513 in words is "five billion, two hundred nine million, one hundred sixty-six thousand, five hundred thirteen".