2687421371066 has 16 divisors (see below), whose sum is σ = 4070538521088. Its totient is φ = 1330576923600.

The previous prime is 2687421371027. The next prime is 2687421371077. The reversal of 2687421371066 is 6601731247862.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2687421370999 and 2687421371017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2746736 + ... + 3594356.

It is an arithmetic number, because the mean of its divisors is an integer number (254408657568).

Almost surely, 2^{2687421371066} is an apocalyptic number.

2687421371066 is a deficient number, since it is larger than the sum of its proper divisors (1383117150022).

2687421371066 is a wasteful number, since it uses less digits than its factorization.

2687421371066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863117.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 2687421371066 in words is "two trillion, six hundred eighty-seven billion, four hundred twenty-one million, three hundred seventy-one thousand, sixty-six".