1270003778066 has 4 divisors (see below), whose sum is σ = 1905005667102. Its totient is φ = 635001889032.

The previous prime is 1270003778053. The next prime is 1270003778077. The reversal of 1270003778066 is 6608773000721.

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

It can be written as a sum of positive squares in only one way, i.e., 1257697203841 + 12306574225 = 1121471^2 + 110935^2 .

It is a super-2 number, since 2×1270003778066² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1270003778066.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 317500944515 + ... + 317500944518.

Almost surely, 2^{1270003778066} is an apocalyptic number.

1270003778066 is a deficient number, since it is larger than the sum of its proper divisors (635001889036).

1270003778066 is an equidigital number, since it uses as much as digits as its factorization.

1270003778066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635001889035.

The product of its (nonzero) digits is 592704, while the sum is 47.

Adding to 1270003778066 its reverse (6608773000721), we get a palindrome (7878776778787).

The spelling of 1270003778066 in words is "one trillion, two hundred seventy billion, three million, seven hundred seventy-eight thousand, sixty-six".