5161957993 has 2 divisors, whose sum is σ = 5161957994. Its totient is φ = 5161957992.

The previous prime is 5161957897. The next prime is 5161958027. The reversal of 5161957993 is 3997591615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4622232169 + 539725824 = 67987^2 + 23232^2 .

It is a cyclic number.

It is not a de Polignac number, because 5161957993 - 2²⁵ = 5128403561 is a prime.

It is not a weakly prime, because it can be changed into another prime (5161957193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2580978996 + 2580978997.

It is an arithmetic number, because the mean of its divisors is an integer number (2580978997).

Almost surely, 2^5161957993 is an apocalyptic number.

It is an amenable number.

5161957993 is a deficient number, since it is larger than the sum of its proper divisors (1).

5161957993 is an equidigital number, since it uses as much as digits as its factorization.

5161957993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2296350, while the sum is 55.

The square root of 5161957993 is about 71846.7674498999. The cubic root of 5161957993 is about 1728.2430616641.

The spelling of 5161957993 in words is "five billion, one hundred sixty-one million, nine hundred fifty-seven thousand, nine hundred ninety-three".