623245911321 has 16 divisors (see below), whose sum is σ = 906614635968. Its totient is φ = 377693491200.

The previous prime is 623245911271. The next prime is 623245911413. The reversal of 623245911321 is 123119542326.

It is not a de Polignac number, because 623245911321 - 2⁶ = 623245911257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 623245911321.

It is not an unprimeable number, because it can be changed into a prime (623245921321) 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, 375196 + ... + 1177821.

It is an arithmetic number, because the mean of its divisors is an integer number (56663414748).

Almost surely, 2^623245911321 is an apocalyptic number.

It is an amenable number.

623245911321 is a deficient number, since it is larger than the sum of its proper divisors (283368724647).

623245911321 is a wasteful number, since it uses less digits than its factorization.

623245911321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565192.

The product of its digits is 77760, while the sum is 39.

The spelling of 623245911321 in words is "six hundred twenty-three billion, two hundred forty-five million, nine hundred eleven thousand, three hundred twenty-one".