123351163545 has 32 divisors (see below), whose sum is σ = 198404559360. Its totient is φ = 65440327680.

The previous prime is 123351163543. The next prime is 123351163567. The reversal of 123351163545 is 545361153321.

It is not a de Polignac number, because 123351163545 - 2¹ = 123351163543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123351163543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3340785 + ... + 3377505.

It is an arithmetic number, because the mean of its divisors is an integer number (6200142480).

Almost surely, 2^123351163545 is an apocalyptic number.

123351163545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123351163545 is a deficient number, since it is larger than the sum of its proper divisors (75053395815).

123351163545 is a wasteful number, since it uses less digits than its factorization.

123351163545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37905.

The product of its digits is 162000, while the sum is 39.

The spelling of 123351163545 in words is "one hundred twenty-three billion, three hundred fifty-one million, one hundred sixty-three thousand, five hundred forty-five".