38717510106221 has 2 divisors, whose sum is σ = 38717510106222. Its totient is φ = 38717510106220.

The previous prime is 38717510106173. The next prime is 38717510106251. The reversal of 38717510106221 is 12260101571783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35818561189321 + 2898948916900 = 5984861^2 + 1702630^2 .

It is a cyclic number.

It is not a de Polignac number, because 38717510106221 - 2³⁸ = 38442632199277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38717510106251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19358755053110 + 19358755053111.

It is an arithmetic number, because the mean of its divisors is an integer number (19358755053111).

Almost surely, 2^{38717510106221} is an apocalyptic number.

It is an amenable number.

38717510106221 is a deficient number, since it is larger than the sum of its proper divisors (1).

38717510106221 is an equidigital number, since it uses as much as digits as its factorization.

38717510106221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 38717510106221 in words is "thirty-eight trillion, seven hundred seventeen billion, five hundred ten million, one hundred six thousand, two hundred twenty-one".