54223621799 has 2 divisors, whose sum is σ = 54223621800. Its totient is φ = 54223621798.

The previous prime is 54223621723. The next prime is 54223621811. The reversal of 54223621799 is 99712632245.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54223621799 - 2¹⁶ = 54223556263 is a prime.

It is a super-2 number, since 2×54223621799² (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 (54223621709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27111810899 + 27111810900.

It is an arithmetic number, because the mean of its divisors is an integer number (27111810900).

Almost surely, 2^54223621799 is an apocalyptic number.

54223621799 is a deficient number, since it is larger than the sum of its proper divisors (1).

54223621799 is an equidigital number, since it uses as much as digits as its factorization.

54223621799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 50.

The spelling of 54223621799 in words is "fifty-four billion, two hundred twenty-three million, six hundred twenty-one thousand, seven hundred ninety-nine".