1377374311717 has 4 divisors (see below), whose sum is σ = 1377376659756. Its totient is φ = 1377371963680.

The previous prime is 1377374311657. The next prime is 1377374311837. The reversal of 1377374311717 is 7171134737731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 785091690916 + 592282620801 = 886054^2 + 769599^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377374311717 - 2²⁷ = 1377240093989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377374411717) 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, 540867 + ... + 1745647.

It is an arithmetic number, because the mean of its divisors is an integer number (344344164939).

Almost surely, 2^{1377374311717} is an apocalyptic number.

It is an amenable number.

1377374311717 is a deficient number, since it is larger than the sum of its proper divisors (2348039).

1377374311717 is a wasteful number, since it uses less digits than its factorization.

1377374311717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348038.

The product of its digits is 1815156, while the sum is 52.

The spelling of 1377374311717 in words is "one trillion, three hundred seventy-seven billion, three hundred seventy-four million, three hundred eleven thousand, seven hundred seventeen".