1376661391167 has 16 divisors (see below), whose sum is σ = 1932272496000. Its totient is φ = 869418081504.

The previous prime is 1376661391109. The next prime is 1376661391169. The reversal of 1376661391167 is 7611931666731.

It is not a de Polignac number, because 1376661391167 - 2⁸ = 1376661390911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376661391169) 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, 241684 + ... + 1676822.

It is an arithmetic number, because the mean of its divisors is an integer number (120767031000).

Almost surely, 2^{1376661391167} is an apocalyptic number.

1376661391167 is a deficient number, since it is larger than the sum of its proper divisors (555611104833).

1376661391167 is a wasteful number, since it uses less digits than its factorization.

1376661391167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451990.

The product of its digits is 5143824, while the sum is 57.

The spelling of 1376661391167 in words is "one trillion, three hundred seventy-six billion, six hundred sixty-one million, three hundred ninety-one thousand, one hundred sixty-seven".