54438894431 has 2 divisors, whose sum is σ = 54438894432. Its totient is φ = 54438894430.

The previous prime is 54438894421. The next prime is 54438894437. The reversal of 54438894431 is 13449883445.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54438894431 is a prime.

It is a super-2 number, since 2×54438894431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54438894437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27219447215 + 27219447216.

It is an arithmetic number, because the mean of its divisors is an integer number (27219447216).

Almost surely, 2^54438894431 is an apocalyptic number.

54438894431 is a deficient number, since it is larger than the sum of its proper divisors (1).

54438894431 is an equidigital number, since it uses as much as digits as its factorization.

54438894431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6635520, while the sum is 53.

The spelling of 54438894431 in words is "fifty-four billion, four hundred thirty-eight million, eight hundred ninety-four thousand, four hundred thirty-one".