53390237389 has 2 divisors, whose sum is σ = 53390237390. Its totient is φ = 53390237388.

The previous prime is 53390237333. The next prime is 53390237399. The reversal of 53390237389 is 98373209335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35318812489 + 18071424900 = 187933^2 + 134430^2 .

It is a cyclic number.

It is not a de Polignac number, because 53390237389 - 2²⁵ = 53356682957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53390237309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26695118694 + 26695118695.

It is an arithmetic number, because the mean of its divisors is an integer number (26695118695).

Almost surely, 2^53390237389 is an apocalyptic number.

It is an amenable number.

53390237389 is a deficient number, since it is larger than the sum of its proper divisors (1).

53390237389 is an equidigital number, since it uses as much as digits as its factorization.

53390237389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 52.

The spelling of 53390237389 in words is "fifty-three billion, three hundred ninety million, two hundred thirty-seven thousand, three hundred eighty-nine".