123214113545 has 4 divisors (see below), whose sum is σ = 147856936260. Its totient is φ = 98571290832.

The previous prime is 123214113509. The next prime is 123214113599. The reversal of 123214113545 is 545311412321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545311412321 = 13 ⋅41947031717.

It can be written as a sum of positive squares in 2 ways, for example, as 69116935801 + 54097177744 = 262901^2 + 232588^2 .

It is a cyclic number.

It is not a de Polignac number, because 123214113545 - 2³⁶ = 54494636809 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12321411350 + ... + 12321411359.

It is an arithmetic number, because the mean of its divisors is an integer number (36964234065).

Almost surely, 2^123214113545 is an apocalyptic number.

It is an amenable number.

123214113545 is a deficient number, since it is larger than the sum of its proper divisors (24642822715).

123214113545 is an equidigital number, since it uses as much as digits as its factorization.

123214113545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24642822714.

The product of its digits is 14400, while the sum is 32.

Adding to 123214113545 its reverse (545311412321), we get a palindrome (668525525866).

The spelling of 123214113545 in words is "one hundred twenty-three billion, two hundred fourteen million, one hundred thirteen thousand, five hundred forty-five".