612236188571993 has 2 divisors, whose sum is σ = 612236188571994. Its totient is φ = 612236188571992.

The previous prime is 612236188571971. The next prime is 612236188572079. The reversal of 612236188571993 is 399175881632216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600894866106649 + 11341322465344 = 24513157^2 + 3367688^2 .

It is a cyclic number.

It is not a de Polignac number, because 612236188571993 - 2¹⁰ = 612236188570969 is a prime.

It is not a weakly prime, because it can be changed into another prime (612236188571393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306118094285996 + 306118094285997.

It is an arithmetic number, because the mean of its divisors is an integer number (306118094285997).

Almost surely, 2^{612236188571993} is an apocalyptic number.

It is an amenable number.

612236188571993 is a deficient number, since it is larger than the sum of its proper divisors (1).

612236188571993 is an equidigital number, since it uses as much as digits as its factorization.

612236188571993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235146240, while the sum is 71.

The spelling of 612236188571993 in words is "six hundred twelve trillion, two hundred thirty-six billion, one hundred eighty-eight million, five hundred seventy-one thousand, nine hundred ninety-three".