38362547860781 has 2 divisors, whose sum is σ = 38362547860782. Its totient is φ = 38362547860780.

The previous prime is 38362547860739. The next prime is 38362547860801. The reversal of 38362547860781 is 18706874526383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38314354439881 + 48193420900 = 6189859^2 + 219530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38362547860781 is a prime.

It is a super-2 number, since 2×38362547860781² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38362547860081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19181273930390 + 19181273930391.

It is an arithmetic number, because the mean of its divisors is an integer number (19181273930391).

Almost surely, 2^{38362547860781} is an apocalyptic number.

It is an amenable number.

38362547860781 is a deficient number, since it is larger than the sum of its proper divisors (1).

38362547860781 is an equidigital number, since it uses as much as digits as its factorization.

38362547860781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 325140480, while the sum is 68.

The spelling of 38362547860781 in words is "thirty-eight trillion, three hundred sixty-two billion, five hundred forty-seven million, eight hundred sixty thousand, seven hundred eighty-one".