5278065181 has 4 divisors (see below), whose sum is σ = 5296715872. Its totient is φ = 5259414492.

The previous prime is 5278065179. The next prime is 5278065193. The reversal of 5278065181 is 1815608725.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5278065181 - 2¹ = 5278065179 is a prime.

It is a super-2 number, since 2×5278065181² = 55715944109769125522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5278065101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9324921 + ... + 9325486.

It is an arithmetic number, because the mean of its divisors is an integer number (1324178968).

Almost surely, 2^5278065181 is an apocalyptic number.

It is an amenable number.

5278065181 is a deficient number, since it is larger than the sum of its proper divisors (18650691).

5278065181 is a wasteful number, since it uses less digits than its factorization.

5278065181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18650690.

The product of its (nonzero) digits is 134400, while the sum is 43.

The square root of 5278065181 is about 72650.2937433841. The cubic root of 5278065181 is about 1741.1048143791.

The spelling of 5278065181 in words is "five billion, two hundred seventy-eight million, sixty-five thousand, one hundred eighty-one".