620139850841 has 4 divisors (see below), whose sum is σ = 708731258112. Its totient is φ = 531548443572.

The previous prime is 620139850831. The next prime is 620139850879. The reversal of 620139850841 is 148058931026.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 148058931026 = 2 ⋅74029465513.

It is a cyclic number.

It is not a de Polignac number, because 620139850841 - 2¹⁸ = 620139588697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620139850831) 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, 44295703625 + ... + 44295703638.

It is an arithmetic number, because the mean of its divisors is an integer number (177182814528).

Almost surely, 2^620139850841 is an apocalyptic number.

It is an amenable number.

620139850841 is a deficient number, since it is larger than the sum of its proper divisors (88591407271).

620139850841 is an equidigital number, since it uses as much as digits as its factorization.

620139850841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88591407270.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 620139850841 in words is "six hundred twenty billion, one hundred thirty-nine million, eight hundred fifty thousand, eight hundred forty-one".