623500620321 has 16 divisors (see below), whose sum is σ = 831891826304. Its totient is φ = 415388352384.

The previous prime is 623500620311. The next prime is 623500620341. The reversal of 623500620321 is 123026005326.

It is not a de Polignac number, because 623500620321 - 2⁹ = 623500619809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623500620311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31554981 + ... + 31574733.

It is an arithmetic number, because the mean of its divisors is an integer number (51993239144).

Almost surely, 2^623500620321 is an apocalyptic number.

It is an amenable number.

623500620321 is a deficient number, since it is larger than the sum of its proper divisors (208391205983).

623500620321 is a wasteful number, since it uses less digits than its factorization.

623500620321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26280.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 623500620321 its reverse (123026005326), we get a palindrome (746526625647).

The spelling of 623500620321 in words is "six hundred twenty-three billion, five hundred million, six hundred twenty thousand, three hundred twenty-one".