18768768727506 has 32 divisors (see below), whose sum is σ = 42977062684800. Its totient is φ = 5352877865856.

The previous prime is 18768768727483. The next prime is 18768768727523. The reversal of 18768768727506 is 60572786786781.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401121531 + ... + 401168318.

It is an arithmetic number, because the mean of its divisors is an integer number (1343033208900).

Almost surely, 2^{18768768727506} is an apocalyptic number.

18768768727506 is an abundant number, since it is smaller than the sum of its proper divisors (24208293957294).

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

18768768727506 is a wasteful number, since it uses less digits than its factorization.

18768768727506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802290418.

The product of its (nonzero) digits is 2655313920, while the sum is 78.

The spelling of 18768768727506 in words is "eighteen trillion, seven hundred sixty-eight billion, seven hundred sixty-eight million, seven hundred twenty-seven thousand, five hundred six".