5405121844 has 12 divisors (see below), whose sum is σ = 9678939424. Its totient is φ = 2639710584.

The previous prime is 5405121817. The next prime is 5405121847. The reversal of 5405121844 is 4481215045.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5405121847) 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, 15712392 + ... + 15712735.

Almost surely, 2^5405121844 is an apocalyptic number.

It is an amenable number.

5405121844 is a deficient number, since it is larger than the sum of its proper divisors (4273817580).

5405121844 is a wasteful number, since it uses less digits than its factorization.

5405121844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31425174 (or 31425172 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 5405121844 is about 73519.5337580428. The cubic root of 5405121844 is about 1754.9651477509.

Adding to 5405121844 its reverse (4481215045), we get a palindrome (9886336889).

The spelling of 5405121844 in words is "five billion, four hundred five million, one hundred twenty-one thousand, eight hundred forty-four".