34720953991 has 4 divisors (see below), whose sum is σ = 35209981584. Its totient is φ = 34231926400.

The previous prime is 34720953959. The next prime is 34720954039. The reversal of 34720953991 is 19935902743.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 34720953991 - 2⁵ = 34720953959 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 (34720953691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244513690 + ... + 244513831.

It is an arithmetic number, because the mean of its divisors is an integer number (8802495396).

Almost surely, 2^34720953991 is an apocalyptic number.

34720953991 is a deficient number, since it is larger than the sum of its proper divisors (489027593).

34720953991 is an equidigital number, since it uses as much as digits as its factorization.

34720953991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489027592.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The spelling of 34720953991 in words is "thirty-four billion, seven hundred twenty million, nine hundred fifty-three thousand, nine hundred ninety-one".