1667120756513 has 4 divisors (see below), whose sum is σ = 1667123343360. Its totient is φ = 1667118169668.

The previous prime is 1667120756479. The next prime is 1667120756563. The reversal of 1667120756513 is 3156570217661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1667120756513 - 2¹² = 1667120752417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1667120756563) 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 3 ways as a sum of consecutive naturals, for example, 532256 + ... + 1901982.

It is an arithmetic number, because the mean of its divisors is an integer number (416780835840).

Almost surely, 2^{1667120756513} is an apocalyptic number.

It is an amenable number.

1667120756513 is a deficient number, since it is larger than the sum of its proper divisors (2586847).

1667120756513 is a wasteful number, since it uses less digits than its factorization.

1667120756513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586846.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 1667120756513 in words is "one trillion, six hundred sixty-seven billion, one hundred twenty million, seven hundred fifty-six thousand, five hundred thirteen".