34539969991 has 4 divisors (see below), whose sum is σ = 35191667592. Its totient is φ = 33888272392.

The previous prime is 34539969967. The next prime is 34539970019. The reversal of 34539969991 is 19996993543.

34539969991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19996993543 = 76369 ⋅261847.

It is a cyclic number.

It is not a de Polignac number, because 34539969991 - 2⁹ = 34539969479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34539969901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325848721 + ... + 325848826.

It is an arithmetic number, because the mean of its divisors is an integer number (8797916898).

Almost surely, 2^34539969991 is an apocalyptic number.

34539969991 is a deficient number, since it is larger than the sum of its proper divisors (651697601).

34539969991 is an equidigital number, since it uses as much as digits as its factorization.

34539969991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651697600.

The product of its digits is 63772920, while the sum is 67.

The spelling of 34539969991 in words is "thirty-four billion, five hundred thirty-nine million, nine hundred sixty-nine thousand, nine hundred ninety-one".