1377442565145 has 48 divisors (see below), whose sum is σ = 2435695254720. Its totient is φ = 719905951872.

The previous prime is 1377442565053. The next prime is 1377442565153. The reversal of 1377442565145 is 5415652447731.

1377442565145 is a `hidden beast` number, since 1 + 3 + 7 + 7 + 442 + 56 + 5 + 145 = 666.

It is not a de Polignac number, because 1377442565145 - 2²³ = 1377434176537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1377442565091 and 1377442565100.

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 47 ways as a sum of consecutive naturals, for example, 23322 + ... + 1659948.

It is an arithmetic number, because the mean of its divisors is an integer number (50743651140).

Almost surely, 2^{1377442565145} is an apocalyptic number.

1377442565145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1377442565145 is a deficient number, since it is larger than the sum of its proper divisors (1058252689575).

1377442565145 is a wasteful number, since it uses less digits than its factorization.

1377442565145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637014 (or 1637011 counting only the distinct ones).

The product of its digits is 14112000, while the sum is 54.

The spelling of 1377442565145 in words is "one trillion, three hundred seventy-seven billion, four hundred forty-two million, five hundred sixty-five thousand, one hundred forty-five".