1268790476836 has 27 divisors (see below), whose sum is σ = 2241374495409. Its totient is φ = 628453446768.

The previous prime is 1268790476801. The next prime is 1268790476923. The reversal of 1268790476836 is 6386740978621.

The square root of 1268790476836 is 1126406.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 884340875236 + 384449601600 = 940394^2 + 620040^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 245553925 + ... + 245559091.

Almost surely, 2^{1268790476836} is an apocalyptic number.

1268790476836 is the 1126406-th square number.

It is an amenable number.

1268790476836 is a deficient number, since it is larger than the sum of its proper divisors (972584018573).

1268790476836 is an frugal number, since it uses more digits than its factorization.

1268790476836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556 (or 5278 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 67.

The spelling of 1268790476836 in words is "one trillion, two hundred sixty-eight billion, seven hundred ninety million, four hundred seventy-six thousand, eight hundred thirty-six".