4609368732421 has 6 divisors (see below), whose sum is σ = 4612927025490. Its totient is φ = 4605813182016.

The previous prime is 4609368732377. The next prime is 4609368732443. The reversal of 4609368732421 is 1242378639064.

4609368732421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2429062517025 + 2180306215396 = 1558545^2 + 1476586^2 .

It is not a de Polignac number, because 4609368732421 - 2³³ = 4600778797829 is a prime.

It is a super-2 number, since 2×4609368732421² (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 (4609368732491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 312175 + ... + 3052243.

It is an arithmetic number, because the mean of its divisors is an integer number (768821170915).

Almost surely, 2^{4609368732421} is an apocalyptic number.

It is an amenable number.

4609368732421 is a deficient number, since it is larger than the sum of its proper divisors (3558293069).

4609368732421 is an frugal number, since it uses more digits than its factorization.

4609368732421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742663 (or 2741366 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 55.

The spelling of 4609368732421 in words is "four trillion, six hundred nine billion, three hundred sixty-eight million, seven hundred thirty-two thousand, four hundred twenty-one".