623348516523 has 4 divisors (see below), whose sum is σ = 831131355368. Its totient is φ = 415565677680.

The previous prime is 623348516519. The next prime is 623348516533. The reversal of 623348516523 is 325615843326.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 623348516523 - 2² = 623348516519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623348516503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103891419418 + ... + 103891419423.

It is an arithmetic number, because the mean of its divisors is an integer number (207782838842).

Almost surely, 2^623348516523 is an apocalyptic number.

623348516523 is a deficient number, since it is larger than the sum of its proper divisors (207782838845).

623348516523 is a wasteful number, since it uses less digits than its factorization.

623348516523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207782838844.

The product of its digits is 3110400, while the sum is 48.

The spelling of 623348516523 in words is "six hundred twenty-three billion, three hundred forty-eight million, five hundred sixteen thousand, five hundred twenty-three".