34378440623 has 2 divisors, whose sum is σ = 34378440624. Its totient is φ = 34378440622.

The previous prime is 34378440611. The next prime is 34378440661. The reversal of 34378440623 is 32604487343.

34378440623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34378440623 - 2¹⁴ = 34378424239 is a prime.

It is a super-3 number, since 3×34378440623³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34378440923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17189220311 + 17189220312.

It is an arithmetic number, because the mean of its divisors is an integer number (17189220312).

Almost surely, 2^34378440623 is an apocalyptic number.

34378440623 is a deficient number, since it is larger than the sum of its proper divisors (1).

34378440623 is an equidigital number, since it uses as much as digits as its factorization.

34378440623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 44.

The spelling of 34378440623 in words is "thirty-four billion, three hundred seventy-eight million, four hundred forty thousand, six hundred twenty-three".