304544145332021 has 36 divisors (see below), whose sum is σ = 362582815747392. Its totient is φ = 255039129663696.

The previous prime is 304544145331963. The next prime is 304544145332039. The reversal of 304544145332021 is 120233541445403.

It is not a de Polignac number, because 304544145332021 - 2⁶ = 304544145331957 is a prime.

It is a super-2 number, since 2×304544145332021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 304544145332021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304544145352021) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22325876 + ... + 33279618.

It is an arithmetic number, because the mean of its divisors is an integer number (10071744881872).

Almost surely, 2^{304544145332021} is an apocalyptic number.

It is an amenable number.

304544145332021 is a deficient number, since it is larger than the sum of its proper divisors (58038670415371).

304544145332021 is a wasteful number, since it uses less digits than its factorization.

304544145332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10954038 (or 10953972 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 304544145332021 its reverse (120233541445403), we get a palindrome (424777686777424).

The spelling of 304544145332021 in words is "three hundred four trillion, five hundred forty-four billion, one hundred forty-five million, three hundred thirty-two thousand, twenty-one".