1267696916720 has 80 divisors (see below), whose sum is σ = 3191851020960. Its totient is φ = 465457708032.

The previous prime is 1267696916719. The next prime is 1267696916729. The reversal of 1267696916720 is 276196967621.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1267696916720² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267696916729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3218699 + ... + 3591018.

It is an arithmetic number, because the mean of its divisors is an integer number (39898137762).

Almost surely, 2^{1267696916720} is an apocalyptic number.

1267696916720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1267696916720 is an abundant number, since it is smaller than the sum of its proper divisors (1924154104240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1267696916720 is a wasteful number, since it uses less digits than its factorization.

1267696916720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809922 (or 6809916 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 62.

The spelling of 1267696916720 in words is "one trillion, two hundred sixty-seven billion, six hundred ninety-six million, nine hundred sixteen thousand, seven hundred twenty".