123655988546 has 4 divisors (see below), whose sum is σ = 185483982822. Its totient is φ = 61827994272.

The previous prime is 123655988539. The next prime is 123655988563. The reversal of 123655988546 is 645889556321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 92318137921 + 31337850625 = 303839^2 + 177025^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30913997135 + ... + 30913997138.

Almost surely, 2^123655988546 is an apocalyptic number.

123655988546 is a deficient number, since it is larger than the sum of its proper divisors (61827994276).

123655988546 is an equidigital number, since it uses as much as digits as its factorization.

123655988546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61827994275.

The product of its digits is 62208000, while the sum is 62.

The spelling of 123655988546 in words is "one hundred twenty-three billion, six hundred fifty-five million, nine hundred eighty-eight thousand, five hundred forty-six".