53993493289 has 2 divisors, whose sum is σ = 53993493290. Its totient is φ = 53993493288.

The previous prime is 53993493217. The next prime is 53993493317. The reversal of 53993493289 is 98239439935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53993493225 + 64 = 232365^2 + 8^2 .

It is a cyclic number.

It is not a de Polignac number, because 53993493289 - 2¹⁷ = 53993362217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53993493289.

It is not a weakly prime, because it can be changed into another prime (53993493889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26996746644 + 26996746645.

It is an arithmetic number, because the mean of its divisors is an integer number (26996746645).

Almost surely, 2^53993493289 is an apocalyptic number.

It is an amenable number.

53993493289 is a deficient number, since it is larger than the sum of its proper divisors (1).

53993493289 is an equidigital number, since it uses as much as digits as its factorization.

53993493289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56687040, while the sum is 64.

Subtracting from 53993493289 its sum of digits (64), we obtain a square (53993493225 = 232365²).

The spelling of 53993493289 in words is "fifty-three billion, nine hundred ninety-three million, four hundred ninety-three thousand, two hundred eighty-nine".