1269821710636 has 12 divisors (see below), whose sum is σ = 2222262249480. Its totient is φ = 634889639360.

The previous prime is 1269821710627. The next prime is 1269821710679. The reversal of 1269821710636 is 6360171289621.

It is a super-2 number, since 2×1269821710636² (a number of 25 digits) contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 5168941 + ... + 5409028.

It is an arithmetic number, because the mean of its divisors is an integer number (185188520790).

Almost surely, 2^{1269821710636} is an apocalyptic number.

It is an amenable number.

1269821710636 is a deficient number, since it is larger than the sum of its proper divisors (952440538844).

1269821710636 is a wasteful number, since it uses less digits than its factorization.

1269821710636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10607984 (or 10607982 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 1269821710636 in words is "one trillion, two hundred sixty-nine billion, eight hundred twenty-one million, seven hundred ten thousand, six hundred thirty-six".