1377738243837 has 12 divisors (see below), whose sum is σ = 1990115189244. Its totient is φ = 918469622400.

The previous prime is 1377738243803. The next prime is 1377738243851. The reversal of 1377738243837 is 7383428377731.

1377738243837 is a `hidden beast` number, since 1 + 377 + 73 + 82 + 43 + 83 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 516082755321 + 861655488516 = 718389^2 + 928254^2 .

It is not a de Polignac number, because 1377738243837 - 2⁶ = 1377738243773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377738743837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1486938 + ... + 2228555.

It is an arithmetic number, because the mean of its divisors is an integer number (165842932437).

Almost surely, 2^{1377738243837} is an apocalyptic number.

It is an amenable number.

1377738243837 is a deficient number, since it is larger than the sum of its proper divisors (612376945407).

1377738243837 is a wasteful number, since it uses less digits than its factorization.

1377738243837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756700 (or 3756697 counting only the distinct ones).

The product of its digits is 99574272, while the sum is 63.

The spelling of 1377738243837 in words is "one trillion, three hundred seventy-seven billion, seven hundred thirty-eight million, two hundred forty-three thousand, eight hundred thirty-seven".