1267479217344 has 28 divisors (see below), whose sum is σ = 3353538763064. Its totient is φ = 422493072384.

The previous prime is 1267479217343. The next prime is 1267479217379. The reversal of 1267479217344 is 4437129747621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1267479217343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3300726937 + ... + 3300727320.

It is an arithmetic number, because the mean of its divisors is an integer number (119769241538).

Almost surely, 2^{1267479217344} is an apocalyptic number.

It is an amenable number.

1267479217344 is an abundant number, since it is smaller than the sum of its proper divisors (2086059545720).

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

1267479217344 is an equidigital number, since it uses as much as digits as its factorization.

1267479217344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6601454272 (or 6601454262 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 57.

The spelling of 1267479217344 in words is "one trillion, two hundred sixty-seven billion, four hundred seventy-nine million, two hundred seventeen thousand, three hundred forty-four".