123045503521 has 8 divisors (see below), whose sum is σ = 127018901504. Its totient is φ = 119072367360.

The previous prime is 123045503509. The next prime is 123045503561. The reversal of 123045503521 is 125305540321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123045503521 - 2²⁷ = 122911285793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123045503561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1438465 + ... + 1521601.

It is an arithmetic number, because the mean of its divisors is an integer number (15877362688).

Almost surely, 2^123045503521 is an apocalyptic number.

It is an amenable number.

123045503521 is a deficient number, since it is larger than the sum of its proper divisors (3973397983).

123045503521 is an equidigital number, since it uses as much as digits as its factorization.

123045503521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130911.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 123045503521 in words is "one hundred twenty-three billion, forty-five million, five hundred three thousand, five hundred twenty-one".