1267620390749 has 16 divisors (see below), whose sum is σ = 1360296480000. Its totient is φ = 1177744276800.

The previous prime is 1267620390709. The next prime is 1267620390779. The reversal of 1267620390749 is 9470930267621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1267620390749 is a prime.

It is a super-2 number, since 2×1267620390749² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1267620390694 and 1267620390703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267620390709) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2610302 + ... + 3057599.

It is an arithmetic number, because the mean of its divisors is an integer number (85018530000).

Almost surely, 2^{1267620390749} is an apocalyptic number.

1267620390749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1267620390749 is a deficient number, since it is larger than the sum of its proper divisors (92676089251).

1267620390749 is a wasteful number, since it uses less digits than its factorization.

1267620390749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5668148.

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 1267620390749 in words is "one trillion, two hundred sixty-seven billion, six hundred twenty million, three hundred ninety thousand, seven hundred forty-nine".