3744645276421 has 8 divisors (see below), whose sum is σ = 4279646184704. Its totient is φ = 3209657263920.

The previous prime is 3744645276389. The next prime is 3744645276499. The reversal of 3744645276421 is 1246725464473.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3744645276421 - 2⁵ = 3744645276389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3744645276121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2593485 + ... + 3770338.

It is an arithmetic number, because the mean of its divisors is an integer number (534955773088).

Almost surely, 2^{3744645276421} is an apocalyptic number.

It is an amenable number.

3744645276421 is a deficient number, since it is larger than the sum of its proper divisors (535000908283).

3744645276421 is an equidigital number, since it uses as much as digits as its factorization.

3744645276421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447891.

The product of its digits is 27095040, while the sum is 55.

The spelling of 3744645276421 in words is "three trillion, seven hundred forty-four billion, six hundred forty-five million, two hundred seventy-six thousand, four hundred twenty-one".