1267904775616 has 56 divisors (see below), whose sum is σ = 2657021238144. Its totient is φ = 599083288320.

The previous prime is 1267904775589. The next prime is 1267904775617. The reversal of 1267904775616 is 6165774097621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267904775617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5066670 + ... + 5311021.

It is an arithmetic number, because the mean of its divisors is an integer number (47446807824).

Almost surely, 2^{1267904775616} is an apocalyptic number.

1267904775616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1267904775616 is an abundant number, since it is smaller than the sum of its proper divisors (1389116462528).

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

1267904775616 is a wasteful number, since it uses less digits than its factorization.

1267904775616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10377809 (or 10377799 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 61.

The spelling of 1267904775616 in words is "one trillion, two hundred sixty-seven billion, nine hundred four million, seven hundred seventy-five thousand, six hundred sixteen".