5426780865 has 32 divisors (see below), whose sum is σ = 9512919936. Its totient is φ = 2619855360.

The previous prime is 5426780837. The next prime is 5426780873. The reversal of 5426780865 is 5680876245.

It is a happy number.

It is not a de Polignac number, because 5426780865 - 2⁵ = 5426780833 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32134 + ... + 109023.

It is an arithmetic number, because the mean of its divisors is an integer number (297278748).

Almost surely, 2^5426780865 is an apocalyptic number.

5426780865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5426780865 is a deficient number, since it is larger than the sum of its proper divisors (4086139071).

5426780865 is a wasteful number, since it uses less digits than its factorization.

5426780865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141409.

The product of its (nonzero) digits is 3225600, while the sum is 51.

The square root of 5426780865 is about 73666.6876206607. The cubic root of 5426780865 is about 1757.3061476013.

The spelling of 5426780865 in words is "five billion, four hundred twenty-six million, seven hundred eighty thousand, eight hundred sixty-five".