123654545212 has 24 divisors (see below), whose sum is σ = 239937736752. Its totient is φ = 55285190400.

The previous prime is 123654545137. The next prime is 123654545239. The reversal of 123654545212 is 212545456321.

It is an alternating number because its digits alternate between odd and even.

It is a congruent 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, 23032813 + ... + 23038180.

It is an arithmetic number, because the mean of its divisors is an integer number (9997405698).

Almost surely, 2^123654545212 is an apocalyptic number.

It is an amenable number.

123654545212 is a deficient number, since it is larger than the sum of its proper divisors (116283191540).

123654545212 is a wasteful number, since it uses less digits than its factorization.

123654545212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46071069 (or 46071067 counting only the distinct ones).

The product of its digits is 288000, while the sum is 40.

It can be divided in two parts, 123654 and 545212, that added together give a palindrome (668866).

The spelling of 123654545212 in words is "one hundred twenty-three billion, six hundred fifty-four million, five hundred forty-five thousand, two hundred twelve".