123643306162 has 4 divisors (see below), whose sum is σ = 185464959246. Its totient is φ = 61821653080.

The previous prime is 123643306099. The next prime is 123643306177. The reversal of 123643306162 is 261603346321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 261603346321 = 150407 ⋅1739303.

It can be written as a sum of positive squares in only one way, i.e., 123593730481 + 49575681 = 351559^2 + 7041^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30910826539 + ... + 30910826542.

Almost surely, 2^123643306162 is an apocalyptic number.

123643306162 is a deficient number, since it is larger than the sum of its proper divisors (61821653084).

123643306162 is an equidigital number, since it uses as much as digits as its factorization.

123643306162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61821653083.

The product of its (nonzero) digits is 93312, while the sum is 37.

The spelling of 123643306162 in words is "one hundred twenty-three billion, six hundred forty-three million, three hundred six thousand, one hundred sixty-two".