993434321911 has 2 divisors, whose sum is σ = 993434321912. Its totient is φ = 993434321910.

The previous prime is 993434321897. The next prime is 993434322103. The reversal of 993434321911 is 119123434399.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 993434321911 - 2¹³ = 993434313719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993434321111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496717160955 + 496717160956.

It is an arithmetic number, because the mean of its divisors is an integer number (496717160956).

Almost surely, 2^993434321911 is an apocalyptic number.

993434321911 is a deficient number, since it is larger than the sum of its proper divisors (1).

993434321911 is an equidigital number, since it uses as much as digits as its factorization.

993434321911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 49.

The spelling of 993434321911 in words is "nine hundred ninety-three billion, four hundred thirty-four million, three hundred twenty-one thousand, nine hundred eleven".