123426154563 has 16 divisors (see below), whose sum is σ = 167282629536. Its totient is φ = 80927159040.

The previous prime is 123426154559. The next prime is 123426154571. The reversal of 123426154563 is 365451624321.

It is not a de Polignac number, because 123426154563 - 2² = 123426154559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123426154963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2237745 + ... + 2292237.

It is an arithmetic number, because the mean of its divisors is an integer number (10455164346).

Almost surely, 2^123426154563 is an apocalyptic number.

123426154563 is a deficient number, since it is larger than the sum of its proper divisors (43856474973).

123426154563 is a wasteful number, since it uses less digits than its factorization.

123426154563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66934.

The product of its digits is 518400, while the sum is 42.

Adding to 123426154563 its reverse (365451624321), we get a palindrome (488877778884).

The spelling of 123426154563 in words is "one hundred twenty-three billion, four hundred twenty-six million, one hundred fifty-four thousand, five hundred sixty-three".