5440778868 has 48 divisors (see below), whose sum is σ = 14525826560. Its totient is φ = 1552677984.

The previous prime is 5440778851. The next prime is 5440778873. The reversal of 5440778868 is 8688770445.

It is a happy number.

It is a super-2 number, since 2×5440778868² = 59204149380950722848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34455 + ... + 109857.

Almost surely, 2^5440778868 is an apocalyptic number.

It is an amenable number.

5440778868 is an abundant number, since it is smaller than the sum of its proper divisors (9085047692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5440778868 is a wasteful number, since it uses less digits than its factorization.

5440778868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76276 (or 76274 counting only the distinct ones).

The product of its (nonzero) digits is 12042240, while the sum is 57.

The square root of 5440778868 is about 73761.6354753608. The cubic root of 5440778868 is about 1758.8157999052.

The spelling of 5440778868 in words is "five billion, four hundred forty million, seven hundred seventy-eight thousand, eight hundred sixty-eight".