5278941691 has 4 divisors (see below), whose sum is σ = 5303960584. Its totient is φ = 5253922800.

The previous prime is 5278941673. The next prime is 5278941739. The reversal of 5278941691 is 1961498725.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5278941691 - 2²³ = 5270553083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5278941611) 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, 12509130 + ... + 12509551.

It is an arithmetic number, because the mean of its divisors is an integer number (1325990146).

Almost surely, 2^5278941691 is an apocalyptic number.

5278941691 is a deficient number, since it is larger than the sum of its proper divisors (25018893).

5278941691 is a wasteful number, since it uses less digits than its factorization.

5278941691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25018892.

The product of its digits is 1088640, while the sum is 52.

The square root of 5278941691 is about 72656.3258842614. The cubic root of 5278941691 is about 1741.2011887927.

The spelling of 5278941691 in words is "five billion, two hundred seventy-eight million, nine hundred forty-one thousand, six hundred ninety-one".