38542152328781 has 2 divisors, whose sum is σ = 38542152328782. Its totient is φ = 38542152328780.

The previous prime is 38542152328747. The next prime is 38542152328811. The reversal of 38542152328781 is 18782325124583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38539822722025 + 2329606756 = 6208045^2 + 48266^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38542152328781 is a prime.

It is a super-2 number, since 2×38542152328781² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38542152328781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38542152328711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19271076164390 + 19271076164391.

It is an arithmetic number, because the mean of its divisors is an integer number (19271076164391).

Almost surely, 2^{38542152328781} is an apocalyptic number.

It is an amenable number.

38542152328781 is a deficient number, since it is larger than the sum of its proper divisors (1).

38542152328781 is an equidigital number, since it uses as much as digits as its factorization.

38542152328781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25804800, while the sum is 59.

The spelling of 38542152328781 in words is "thirty-eight trillion, five hundred forty-two billion, one hundred fifty-two million, three hundred twenty-eight thousand, seven hundred eighty-one".