123354501672 has 16 divisors (see below), whose sum is σ = 308386254240. Its totient is φ = 41118167216.

The previous prime is 123354501671. The next prime is 123354501701. The reversal of 123354501672 is 276105453321.

It is a self number, because there is not a number n which added to its sum of digits gives 123354501672.

It is not an unprimeable number, because it can be changed into a prime (123354501671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2569885428 + ... + 2569885475.

It is an arithmetic number, because the mean of its divisors is an integer number (19274140890).

Almost surely, 2^123354501672 is an apocalyptic number.

123354501672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123354501672 is an abundant number, since it is smaller than the sum of its proper divisors (185031752568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123354501672 is a wasteful number, since it uses less digits than its factorization.

123354501672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139770912 (or 5139770908 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

Adding to 123354501672 its reverse (276105453321), we get a palindrome (399459954993).

The spelling of 123354501672 in words is "one hundred twenty-three billion, three hundred fifty-four million, five hundred one thousand, six hundred seventy-two".