5071971218 has 4 divisors (see below), whose sum is σ = 7607956830. Its totient is φ = 2535985608.

The previous prime is 5071971197. The next prime is 5071971227. The reversal of 5071971218 is 8121791705.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8121791705 = 5 ⋅1624358341.

It can be written as a sum of positive squares in only one way, i.e., 4329245209 + 742726009 = 65797^2 + 27253^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1267992803 + ... + 1267992806.

Almost surely, 2^5071971218 is an apocalyptic number.

5071971218 is a deficient number, since it is larger than the sum of its proper divisors (2535985612).

5071971218 is a wasteful number, since it uses less digits than its factorization.

5071971218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535985611.

The product of its (nonzero) digits is 35280, while the sum is 41.

The square root of 5071971218 is about 71217.7731890011. The cubic root of 5071971218 is about 1718.1414955809.

The spelling of 5071971218 in words is "five billion, seventy-one million, nine hundred seventy-one thousand, two hundred eighteen".