34638740643 has 64 divisors (see below), whose sum is σ = 54007188480. Its totient is φ = 19556646912.

The previous prime is 34638740569. The next prime is 34638740663. The reversal of 34638740643 is 34604783643.

It is not a de Polignac number, because 34638740643 - 2⁹ = 34638740131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 34638740592 and 34638740601.

It is not an unprimeable number, because it can be changed into a prime (34638740663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4304818 + ... + 4312856.

It is an arithmetic number, because the mean of its divisors is an integer number (843862320).

Almost surely, 2^34638740643 is an apocalyptic number.

34638740643 is a deficient number, since it is larger than the sum of its proper divisors (19368447837).

34638740643 is a wasteful number, since it uses less digits than its factorization.

34638740643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8236.

The product of its (nonzero) digits is 3483648, while the sum is 48.

The spelling of 34638740643 in words is "thirty-four billion, six hundred thirty-eight million, seven hundred forty thousand, six hundred forty-three".