3721430222624 has 24 divisors (see below), whose sum is σ = 7326630886428. Its totient is φ = 1860698568960.

The previous prime is 3721430222623. The next prime is 3721430222693. The reversal of 3721430222624 is 4262220341273.

It can be written as a sum of positive squares in 2 ways, for example, as 3529393454224 + 192036768400 = 1878668^2 + 438220^2 .

It is not an unprimeable number, because it can be changed into a prime (3721430222623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3657254 + ... + 4562714.

Almost surely, 2^{3721430222624} is an apocalyptic number.

It is an amenable number.

3721430222624 is a deficient number, since it is larger than the sum of its proper divisors (3605200663804).

3721430222624 is a wasteful number, since it uses less digits than its factorization.

3721430222624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033908 (or 1033900 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 38.

Adding to 3721430222624 its reverse (4262220341273), we get a palindrome (7983650563897).

The spelling of 3721430222624 in words is "three trillion, seven hundred twenty-one billion, four hundred thirty million, two hundred twenty-two thousand, six hundred twenty-four".