238647202746761 has 2 divisors, whose sum is σ = 238647202746762. Its totient is φ = 238647202746760.

The previous prime is 238647202746731. The next prime is 238647202746857. The reversal of 238647202746761 is 167647202746832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229876388805625 + 8770813941136 = 15161675^2 + 2961556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238647202746761 is a prime.

It is a super-2 number, since 2×238647202746761² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (238647202746731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119323601373380 + 119323601373381.

It is an arithmetic number, because the mean of its divisors is an integer number (119323601373381).

Almost surely, 2^{238647202746761} is an apocalyptic number.

It is an amenable number.

238647202746761 is a deficient number, since it is larger than the sum of its proper divisors (1).

238647202746761 is an equidigital number, since it uses as much as digits as its factorization.

238647202746761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 227598336, while the sum is 65.

The spelling of 238647202746761 in words is "two hundred thirty-eight trillion, six hundred forty-seven billion, two hundred two million, seven hundred forty-six thousand, seven hundred sixty-one".