623455645631113 has 4 divisors (see below), whose sum is σ = 623497711339588. Its totient is φ = 623413579922640.

The previous prime is 623455645631111. The next prime is 623455645631153. The reversal of 623455645631113 is 311136546554326.

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 447725413587529 + 175730232043584 = 21159523^2 + 13256328^2 .

It is a cyclic number.

It is not a de Polignac number, because 623455645631113 - 2¹ = 623455645631111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623455645631111) 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, 21032832006 + ... + 21032861647.

It is an arithmetic number, because the mean of its divisors is an integer number (155874427834897).

Almost surely, 2^{623455645631113} is an apocalyptic number.

It is an amenable number.

623455645631113 is a deficient number, since it is larger than the sum of its proper divisors (42065708475).

623455645631113 is a wasteful number, since it uses less digits than its factorization.

623455645631113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42065708474.

The product of its digits is 23328000, while the sum is 55.

The spelling of 623455645631113 in words is "six hundred twenty-three trillion, four hundred fifty-five billion, six hundred forty-five million, six hundred thirty-one thousand, one hundred thirteen".