1385422777257 has 16 divisors (see below), whose sum is σ = 1872777486528. Its totient is φ = 910844904960.

The previous prime is 1385422777247. The next prime is 1385422777259. The reversal of 1385422777257 is 7527772245831.

It is not a de Polignac number, because 1385422777257 - 2⁴ = 1385422777241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1385422777257.

It is not an unprimeable number, because it can be changed into a prime (1385422777259) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1300782 + ... + 2112552.

It is an arithmetic number, because the mean of its divisors is an integer number (117048592908).

Almost surely, 2^{1385422777257} is an apocalyptic number.

It is an amenable number.

1385422777257 is a deficient number, since it is larger than the sum of its proper divisors (487354709271).

1385422777257 is an equidigital number, since it uses as much as digits as its factorization.

1385422777257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819640.

The product of its digits is 46099200, while the sum is 60.

The spelling of 1385422777257 in words is "one trillion, three hundred eighty-five billion, four hundred twenty-two million, seven hundred seventy-seven thousand, two hundred fifty-seven".