123621163450 has 48 divisors (see below), whose sum is σ = 233781224544. Its totient is φ = 48621931200.

The previous prime is 123621163447. The next prime is 123621163451. The reversal of 123621163450 is 54361126321.

It is not an unprimeable number, because it can be changed into a prime (123621163451) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 14596117 + ... + 14604583.

It is an arithmetic number, because the mean of its divisors is an integer number (4870442178).

Almost surely, 2^123621163450 is an apocalyptic number.

123621163450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123621163450 is a deficient number, since it is larger than the sum of its proper divisors (110160061094).

123621163450 is a wasteful number, since it uses less digits than its factorization.

123621163450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13327 (or 13322 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 123621163450 its reverse (54361126321), we get a palindrome (177982289771).

The spelling of 123621163450 in words is "one hundred twenty-three billion, six hundred twenty-one million, one hundred sixty-three thousand, four hundred fifty".