53890866443 has 2 divisors, whose sum is σ = 53890866444. Its totient is φ = 53890866442.

The previous prime is 53890866389. The next prime is 53890866451. The reversal of 53890866443 is 34466809835.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53890866443 - 2²⁰ = 53889817867 is a prime.

It is not a weakly prime, because it can be changed into another prime (53890886443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26945433221 + 26945433222.

It is an arithmetic number, because the mean of its divisors is an integer number (26945433222).

Almost surely, 2^53890866443 is an apocalyptic number.

53890866443 is a deficient number, since it is larger than the sum of its proper divisors (1).

53890866443 is an equidigital number, since it uses as much as digits as its factorization.

53890866443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14929920, while the sum is 56.

The spelling of 53890866443 in words is "fifty-three billion, eight hundred ninety million, eight hundred sixty-six thousand, four hundred forty-three".