620041444321 has 4 divisors (see below), whose sum is σ = 667736940052. Its totient is φ = 572345948592.

The previous prime is 620041444277. The next prime is 620041444361. The reversal of 620041444321 is 123444140026.

620041444321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 294457084321 + 325584360000 = 542639^2 + 570600^2 .

It is a cyclic number.

It is not a de Polignac number, because 620041444321 - 2¹³ = 620041436129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620041444361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23847747846 + ... + 23847747871.

It is an arithmetic number, because the mean of its divisors is an integer number (166934235013).

Almost surely, 2^620041444321 is an apocalyptic number.

It is an amenable number.

620041444321 is a deficient number, since it is larger than the sum of its proper divisors (47695495731).

620041444321 is a wasteful number, since it uses less digits than its factorization.

620041444321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47695495730.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 620041444321 its reverse (123444140026), we get a palindrome (743485584347).

The spelling of 620041444321 in words is "six hundred twenty billion, forty-one million, four hundred forty-four thousand, three hundred twenty-one".