123205315534026 has 32 divisors (see below), whose sum is σ = 272823710934528. Its totient is φ = 36777706128240.

The previous prime is 123205315534013. The next prime is 123205315534079. The reversal of 123205315534026 is 620435513502321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13930944870 + ... + 13930953713.

It is an arithmetic number, because the mean of its divisors is an integer number (8525740966704).

Almost surely, 2^{123205315534026} is an apocalyptic number.

123205315534026 is an abundant number, since it is smaller than the sum of its proper divisors (149618395400502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123205315534026 is a wasteful number, since it uses less digits than its factorization.

123205315534026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27861898666.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 123205315534026 in words is "one hundred twenty-three trillion, two hundred five billion, three hundred fifteen million, five hundred thirty-four thousand, twenty-six".