1377099669172 has 6 divisors (see below), whose sum is σ = 2409924421058. Its totient is φ = 688549834584.

The previous prime is 1377099669137. The next prime is 1377099669173. The reversal of 1377099669172 is 2719669907731.

It can be written as a sum of positive squares in only one way, i.e., 1279151952016 + 97947717156 = 1130996^2 + 312966^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1377099669098 and 1377099669107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377099669173) 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 as a sum of consecutive naturals, namely, 172137458643 + ... + 172137458650.

Almost surely, 2^{1377099669172} is an apocalyptic number.

It is an amenable number.

1377099669172 is a deficient number, since it is larger than the sum of its proper divisors (1032824751886).

1377099669172 is a wasteful number, since it uses less digits than its factorization.

1377099669172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344274917297 (or 344274917295 counting only the distinct ones).

The product of its (nonzero) digits is 54010152, while the sum is 67.

The spelling of 1377099669172 in words is "one trillion, three hundred seventy-seven billion, ninety-nine million, six hundred sixty-nine thousand, one hundred seventy-two".