383743821061 has 2 divisors, whose sum is σ = 383743821062. Its totient is φ = 383743821060.

The previous prime is 383743821059. The next prime is 383743821067. The reversal of 383743821061 is 160128347383.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 359287552836 + 24456268225 = 599406^2 + 156385^2 .

It is a cyclic number.

It is not a de Polignac number, because 383743821061 - 2¹ = 383743821059 is a prime.

Together with 383743821059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (383743821067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191871910530 + 191871910531.

It is an arithmetic number, because the mean of its divisors is an integer number (191871910531).

Almost surely, 2^383743821061 is an apocalyptic number.

It is an amenable number.

383743821061 is a deficient number, since it is larger than the sum of its proper divisors (1).

383743821061 is an equidigital number, since it uses as much as digits as its factorization.

383743821061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 383743821061 in words is "three hundred eighty-three billion, seven hundred forty-three million, eight hundred twenty-one thousand, sixty-one".