123405315314155 has 8 divisors (see below), whose sum is σ = 169241575288032. Its totient is φ = 84620787643968.

The previous prime is 123405315314081. The next prime is 123405315314227. The reversal of 123405315314155 is 551413513504321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123405315314155 - 2¹⁵ = 123405315281387 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1762933075882 + ... + 1762933075951.

It is an arithmetic number, because the mean of its divisors is an integer number (21155196911004).

Almost surely, 2^{123405315314155} is an apocalyptic number.

123405315314155 is a deficient number, since it is larger than the sum of its proper divisors (45836259973877).

123405315314155 is an equidigital number, since it uses as much as digits as its factorization.

123405315314155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525866151845.

The product of its (nonzero) digits is 540000, while the sum is 43.

Adding to 123405315314155 its reverse (551413513504321), we get a palindrome (674818828818476).

The spelling of 123405315314155 in words is "one hundred twenty-three trillion, four hundred five billion, three hundred fifteen million, three hundred fourteen thousand, one hundred fifty-five".