1377572131045 has 12 divisors (see below), whose sum is σ = 1817029026540. Its totient is φ = 1001870640320.

The previous prime is 1377572131037. The next prime is 1377572131057. The reversal of 1377572131045 is 5401312757731.

It can be written as a sum of positive squares in 2 ways, for example, as 644067241444 + 733504889601 = 802538^2 + 856449^2 .

It is not a de Polignac number, because 1377572131045 - 2³ = 1377572131037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1377572130986 and 1377572131004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1138488760 + ... + 1138489969.

It is an arithmetic number, because the mean of its divisors is an integer number (151419085545).

Almost surely, 2^{1377572131045} is an apocalyptic number.

It is an amenable number.

1377572131045 is a deficient number, since it is larger than the sum of its proper divisors (439456895495).

1377572131045 is a wasteful number, since it uses less digits than its factorization.

1377572131045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276978756 (or 2276978745 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 46.

Adding to 1377572131045 its reverse (5401312757731), we get a palindrome (6778884888776).

The spelling of 1377572131045 in words is "one trillion, three hundred seventy-seven billion, five hundred seventy-two million, one hundred thirty-one thousand, forty-five".