620209729923 has 12 divisors (see below), whose sum is σ = 961957948680. Its totient is φ = 354405559872.

The previous prime is 620209729907. The next prime is 620209729957. The reversal of 620209729923 is 329927902026.

It is not a de Polignac number, because 620209729923 - 2⁴ = 620209729907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620209729423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2109556758 + ... + 2109557051.

It is an arithmetic number, because the mean of its divisors is an integer number (80163162390).

Almost surely, 2^620209729923 is an apocalyptic number.

620209729923 is a deficient number, since it is larger than the sum of its proper divisors (341748218757).

620209729923 is a wasteful number, since it uses less digits than its factorization.

620209729923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219113826 (or 4219113819 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

The spelling of 620209729923 in words is "six hundred twenty billion, two hundred nine million, seven hundred twenty-nine thousand, nine hundred twenty-three".