34520038781 has 2 divisors, whose sum is σ = 34520038782. Its totient is φ = 34520038780.

The previous prime is 34520038771. The next prime is 34520038849. The reversal of 34520038781 is 18783002543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33868513156 + 651525625 = 184034^2 + 25525^2 .

It is an emirp because it is prime and its reverse (18783002543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34520038781 - 2¹⁰ = 34520037757 is a prime.

It is a super-2 number, since 2×34520038781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34520038711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17260019390 + 17260019391.

It is an arithmetic number, because the mean of its divisors is an integer number (17260019391).

Almost surely, 2^34520038781 is an apocalyptic number.

It is an amenable number.

34520038781 is a deficient number, since it is larger than the sum of its proper divisors (1).

34520038781 is an equidigital number, since it uses as much as digits as its factorization.

34520038781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 34520038781 in words is "thirty-four billion, five hundred twenty million, thirty-eight thousand, seven hundred eighty-one".