53944616491 has 2 divisors, whose sum is σ = 53944616492. Its totient is φ = 53944616490.

The previous prime is 53944616483. The next prime is 53944616497. The reversal of 53944616491 is 19461644935.

53944616491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53944616491 - 2³ = 53944616483 is a prime.

It is a super-2 number, since 2×53944616491² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53944616497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26972308245 + 26972308246.

It is an arithmetic number, because the mean of its divisors is an integer number (26972308246).

Almost surely, 2^53944616491 is an apocalyptic number.

53944616491 is a deficient number, since it is larger than the sum of its proper divisors (1).

53944616491 is an equidigital number, since it uses as much as digits as its factorization.

53944616491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 52.

The spelling of 53944616491 in words is "fifty-three billion, nine hundred forty-four million, six hundred sixteen thousand, four hundred ninety-one".