3604432456421 has 32 divisors (see below), whose sum is σ = 3999590638848. Its totient is φ = 3230905216000.

The previous prime is 3604432456397. The next prime is 3604432456451. The reversal of 3604432456421 is 1246542344063.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-3604432456421 is a prime.

It is a super-2 number, since 2×3604432456421² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3604432456451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 513960911 + ... + 513967923.

It is an arithmetic number, because the mean of its divisors is an integer number (124987207464).

Almost surely, 2^{3604432456421} is an apocalyptic number.

It is an amenable number.

3604432456421 is a deficient number, since it is larger than the sum of its proper divisors (395158182427).

3604432456421 is a wasteful number, since it uses less digits than its factorization.

3604432456421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12541.

The product of its (nonzero) digits is 1658880, while the sum is 44.

The spelling of 3604432456421 in words is "three trillion, six hundred four billion, four hundred thirty-two million, four hundred fifty-six thousand, four hundred twenty-one".