123749060563 has 4 divisors (see below), whose sum is σ = 123773565528. Its totient is φ = 123724555600.

The previous prime is 123749060557. The next prime is 123749060573. The reversal of 123749060563 is 365060947321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123749060563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123749060573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12244906 + ... + 12255007.

It is an arithmetic number, because the mean of its divisors is an integer number (30943391382).

Almost surely, 2^123749060563 is an apocalyptic number.

123749060563 is a deficient number, since it is larger than the sum of its proper divisors (24504965).

123749060563 is an equidigital number, since it uses as much as digits as its factorization.

123749060563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24504964.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 123749060563 in words is "one hundred twenty-three billion, seven hundred forty-nine million, sixty thousand, five hundred sixty-three".