53891494369 has 2 divisors, whose sum is σ = 53891494370. Its totient is φ = 53891494368.

The previous prime is 53891494361. The next prime is 53891494441. The reversal of 53891494369 is 96349419835.

53891494369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51671199969 + 2220294400 = 227313^2 + 47120^2 .

It is a cyclic number.

It is not a de Polignac number, because 53891494369 - 2³ = 53891494361 is a prime.

It is a super-2 number, since 2×53891494369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53891494361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26945747184 + 26945747185.

It is an arithmetic number, because the mean of its divisors is an integer number (26945747185).

Almost surely, 2^53891494369 is an apocalyptic number.

It is an amenable number.

53891494369 is a deficient number, since it is larger than the sum of its proper divisors (1).

53891494369 is an equidigital number, since it uses as much as digits as its factorization.

53891494369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25194240, while the sum is 61.

The spelling of 53891494369 in words is "fifty-three billion, eight hundred ninety-one million, four hundred ninety-four thousand, three hundred sixty-nine".