123523216453365 has 64 divisors (see below), whose sum is σ = 199906806435840. Its totient is φ = 65127888449280.

The previous prime is 123523216453339. The next prime is 123523216453447. The reversal of 123523216453365 is 563354612325321.

It is not a de Polignac number, because 123523216453365 - 2⁵ = 123523216453333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 327308919 + ... + 327686091.

It is an arithmetic number, because the mean of its divisors is an integer number (3123543850560).

Almost surely, 2^{123523216453365} is an apocalyptic number.

123523216453365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123523216453365 is a deficient number, since it is larger than the sum of its proper divisors (76383589982475).

123523216453365 is a wasteful number, since it uses less digits than its factorization.

123523216453365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378074.

The product of its digits is 11664000, while the sum is 51.

Adding to 123523216453365 its reverse (563354612325321), we get a palindrome (686877828778686).

The spelling of 123523216453365 in words is "one hundred twenty-three trillion, five hundred twenty-three billion, two hundred sixteen million, four hundred fifty-three thousand, three hundred sixty-five".