5351442644 has 12 divisors (see below), whose sum is σ = 9857920800. Its totient is φ = 2534893848.

The previous prime is 5351442623. The next prime is 5351442647. The reversal of 5351442644 is 4462441535.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 5351442598 and 5351442607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5351442647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35206784 + ... + 35206935.

It is an arithmetic number, because the mean of its divisors is an integer number (821493400).

Almost surely, 2^5351442644 is an apocalyptic number.

It is an amenable number.

5351442644 is a deficient number, since it is larger than the sum of its proper divisors (4506478156).

5351442644 is a wasteful number, since it uses less digits than its factorization.

5351442644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70413742 (or 70413740 counting only the distinct ones).

The product of its digits is 230400, while the sum is 38.

The square root of 5351442644 is about 73153.5552382794. Note that the first 3 decimals coincide. The cubic root of 5351442644 is about 1749.1361879996.

The spelling of 5351442644 in words is "five billion, three hundred fifty-one million, four hundred forty-two thousand, six hundred forty-four".