1377445642723 has 4 divisors (see below), whose sum is σ = 1378240477488. Its totient is φ = 1376650807960.

The previous prime is 1377445642717. The next prime is 1377445642739. The reversal of 1377445642723 is 3272465447731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1377445642723 - 2²⁹ = 1376908771811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1377445642763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397414783 + ... + 397418248.

It is an arithmetic number, because the mean of its divisors is an integer number (344560119372).

Almost surely, 2^{1377445642723} is an apocalyptic number.

1377445642723 is a deficient number, since it is larger than the sum of its proper divisors (794834765).

1377445642723 is an equidigital number, since it uses as much as digits as its factorization.

1377445642723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794834764.

The product of its digits is 23708160, while the sum is 55.

The spelling of 1377445642723 in words is "one trillion, three hundred seventy-seven billion, four hundred forty-five million, six hundred forty-two thousand, seven hundred twenty-three".