1377076433121 has 9 divisors (see below), whose sum is σ = 1989115488529. Its totient is φ = 918048608436.

The previous prime is 1377076433111. The next prime is 1377076433197. The reversal of 1377076433121 is 1213346707731.

The square root of 1377076433121 is 1173489.

It is a perfect power (a square), and thus also a powerful number.

1377076433121 is a `hidden beast` number, since 137 + 7 + 0 + 76 + 433 + 12 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1377076433121 - 2¹⁹ = 1377075908833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1377076433101) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3324886 + ... + 3716048.

Almost surely, 2^{1377076433121} is an apocalyptic number.

1377076433121 is the 1173489-th square number.

1377076433121 is the 586745-th centered octagonal number.

It is an amenable number.

1377076433121 is a deficient number, since it is larger than the sum of its proper divisors (612039055408).

1377076433121 is an frugal number, since it uses more digits than its factorization.

1377076433121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782332 (or 391166 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The spelling of 1377076433121 in words is "one trillion, three hundred seventy-seven billion, seventy-six million, four hundred thirty-three thousand, one hundred twenty-one".