123045145203355 has 16 divisors (see below), whose sum is σ = 159386814780480. Its totient is φ = 90909516573568.

The previous prime is 123045145203349. The next prime is 123045145203503. The reversal of 123045145203355 is 553302541540321.

It is a cyclic number.

It is not a de Polignac number, because 123045145203355 - 2¹⁵ = 123045145170587 is a prime.

It is a super-2 number, since 2×123045145203355² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18447544672 + ... + 18447551341.

It is an arithmetic number, because the mean of its divisors is an integer number (9961675923780).

Almost surely, 2^{123045145203355} is an apocalyptic number.

123045145203355 is a deficient number, since it is larger than the sum of its proper divisors (36341669577125).

123045145203355 is a wasteful number, since it uses less digits than its factorization.

123045145203355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36895096070.

The product of its (nonzero) digits is 1080000, while the sum is 43.

Adding to 123045145203355 its reverse (553302541540321), we get a palindrome (676347686743676).

The spelling of 123045145203355 in words is "one hundred twenty-three trillion, forty-five billion, one hundred forty-five million, two hundred three thousand, three hundred fifty-five".