123012315445145 has 32 divisors (see below), whose sum is σ = 168925562227968. Its totient is φ = 84239857813248.

The previous prime is 123012315445099. The next prime is 123012315445171. The reversal of 123012315445145 is 541544513210321.

It is a cyclic number.

It is not a de Polignac number, because 123012315445145 - 2¹⁰ = 123012315444121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170396087 + ... + 171116483.

It is an arithmetic number, because the mean of its divisors is an integer number (5278923819624).

Almost surely, 2^{123012315445145} is an apocalyptic number.

It is an amenable number.

123012315445145 is a deficient number, since it is larger than the sum of its proper divisors (45913246782823).

123012315445145 is an equidigital number, since it uses as much as digits as its factorization.

123012315445145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726849.

The product of its (nonzero) digits is 288000, while the sum is 41.

Adding to 123012315445145 its reverse (541544513210321), we get a palindrome (664556828655466).

The spelling of 123012315445145 in words is "one hundred twenty-three trillion, twelve billion, three hundred fifteen million, four hundred forty-five thousand, one hundred forty-five".