5165421671 has 2 divisors, whose sum is σ = 5165421672. Its totient is φ = 5165421670.

The previous prime is 5165421649. The next prime is 5165421697. The reversal of 5165421671 is 1761245615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5165421671 - 2³⁰ = 4091679847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5165421631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2582710835 + 2582710836.

It is an arithmetic number, because the mean of its divisors is an integer number (2582710836).

Almost surely, 2^5165421671 is an apocalyptic number.

5165421671 is a deficient number, since it is larger than the sum of its proper divisors (1).

5165421671 is an equidigital number, since it uses as much as digits as its factorization.

5165421671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 38.

The square root of 5165421671 is about 71870.8680273169. The cubic root of 5165421671 is about 1728.6295260697.

The spelling of 5165421671 in words is "five billion, one hundred sixty-five million, four hundred twenty-one thousand, six hundred seventy-one".