38535330377821 has 2 divisors, whose sum is σ = 38535330377822. Its totient is φ = 38535330377820.

The previous prime is 38535330377777. The next prime is 38535330377891. The reversal of 38535330377821 is 12877303353583.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31889297937721 + 6646032440100 = 5647061^2 + 2577990^2 .

It is a cyclic number.

It is not a de Polignac number, because 38535330377821 - 2¹³ = 38535330369629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38535330377891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19267665188910 + 19267665188911.

It is an arithmetic number, because the mean of its divisors is an integer number (19267665188911).

Almost surely, 2^{38535330377821} is an apocalyptic number.

It is an amenable number.

38535330377821 is a deficient number, since it is larger than the sum of its proper divisors (1).

38535330377821 is an equidigital number, since it uses as much as digits as its factorization.

38535330377821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38102400, while the sum is 58.

The spelling of 38535330377821 in words is "thirty-eight trillion, five hundred thirty-five billion, three hundred thirty million, three hundred seventy-seven thousand, eight hundred twenty-one".