18628787464711 has 4 divisors (see below), whose sum is σ = 19083148134624. Its totient is φ = 18174426794800.

The previous prime is 18628787464709. The next prime is 18628787464733. The reversal of 18628787464711 is 11746478782681.

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

It is a cyclic number.

It is not a de Polignac number, because 18628787464711 - 2¹ = 18628787464709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18628787464751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227180334895 + ... + 227180334976.

It is an arithmetic number, because the mean of its divisors is an integer number (4770787033656).

Almost surely, 2^{18628787464711} is an apocalyptic number.

18628787464711 is a deficient number, since it is larger than the sum of its proper divisors (454360669913).

18628787464711 is an equidigital number, since it uses as much as digits as its factorization.

18628787464711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454360669912.

The product of its digits is 202309632, while the sum is 70.

The spelling of 18628787464711 in words is "eighteen trillion, six hundred twenty-eight billion, seven hundred eighty-seven million, four hundred sixty-four thousand, seven hundred eleven".