123651206143023 has 64 divisors (see below), whose sum is σ = 183856683386880. Its totient is φ = 73395658828800.

The previous prime is 123651206143021. The next prime is 123651206143037. The reversal of 123651206143023 is 320341602156321.

It is not a de Polignac number, because 123651206143023 - 2¹ = 123651206143021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123651206143021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8580327688 + ... + 8580342098.

It is an arithmetic number, because the mean of its divisors is an integer number (2872760677920).

Almost surely, 2^{123651206143023} is an apocalyptic number.

123651206143023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123651206143023 is a deficient number, since it is larger than the sum of its proper divisors (60205477243857).

123651206143023 is a wasteful number, since it uses less digits than its factorization.

123651206143023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21520.

The product of its (nonzero) digits is 155520, while the sum is 39.

Adding to 123651206143023 its reverse (320341602156321), we get a palindrome (443992808299344).

The spelling of 123651206143023 in words is "one hundred twenty-three trillion, six hundred fifty-one billion, two hundred six million, one hundred forty-three thousand, twenty-three".