1385996894761 has 2 divisors, whose sum is σ = 1385996894762. Its totient is φ = 1385996894760.

The previous prime is 1385996894687. The next prime is 1385996894797. The reversal of 1385996894761 is 1674986995831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1253154869136 + 132842025625 = 1119444^2 + 364475^2 .

It is a cyclic number.

It is not a de Polignac number, because 1385996894761 - 2¹⁵ = 1385996861993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1385996874761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692998447380 + 692998447381.

It is an arithmetic number, because the mean of its divisors is an integer number (692998447381).

Almost surely, 2^{1385996894761} is an apocalyptic number.

It is an amenable number.

1385996894761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385996894761 is an equidigital number, since it uses as much as digits as its factorization.

1385996894761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705438720, while the sum is 76.

The spelling of 1385996894761 in words is "one trillion, three hundred eighty-five billion, nine hundred ninety-six million, eight hundred ninety-four thousand, seven hundred sixty-one".