383328912961 has 2 divisors, whose sum is σ = 383328912962. Its totient is φ = 383328912960.

The previous prime is 383328912949. The next prime is 383328912977. The reversal of 383328912961 is 169219823383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 349185264561 + 34143648400 = 590919^2 + 184780^2 .

It is a cyclic number.

It is not a de Polignac number, because 383328912961 - 2¹³ = 383328904769 is a prime.

It is not a weakly prime, because it can be changed into another prime (383328912361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191664456480 + 191664456481.

It is an arithmetic number, because the mean of its divisors is an integer number (191664456481).

Almost surely, 2^383328912961 is an apocalyptic number.

It is an amenable number.

383328912961 is a deficient number, since it is larger than the sum of its proper divisors (1).

383328912961 is an equidigital number, since it uses as much as digits as its factorization.

383328912961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 55.

The spelling of 383328912961 in words is "three hundred eighty-three billion, three hundred twenty-eight million, nine hundred twelve thousand, nine hundred sixty-one".