1377323055657 has 48 divisors (see below), whose sum is σ = 2011781051280. Its totient is φ = 907975028736.

The previous prime is 1377323055617. The next prime is 1377323055673. The reversal of 1377323055657 is 7565503237731.

1377323055657 is a `hidden beast` number, since 1 + 3 + 7 + 7 + 3 + 2 + 30 + 556 + 57 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 456828643881 + 920494411776 = 675891^2 + 959424^2 .

It is not a de Polignac number, because 1377323055657 - 2⁶ = 1377323055593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1377323055617) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 596500819 + ... + 596503127.

It is an arithmetic number, because the mean of its divisors is an integer number (41912105235).

Almost surely, 2^{1377323055657} is an apocalyptic number.

It is an amenable number.

1377323055657 is a deficient number, since it is larger than the sum of its proper divisors (634457995623).

1377323055657 is a wasteful number, since it uses less digits than its factorization.

1377323055657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4122 (or 4119 counting only the distinct ones).

The product of its (nonzero) digits is 13891500, while the sum is 54.

The spelling of 1377323055657 in words is "one trillion, three hundred seventy-seven billion, three hundred twenty-three million, fifty-five thousand, six hundred fifty-seven".