34154421643 has 4 divisors (see below), whose sum is σ = 34290495288. Its totient is φ = 34018348000.

The previous prime is 34154421607. The next prime is 34154421671. The reversal of 34154421643 is 34612445143.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34154421643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34154421443) 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, 68036446 + ... + 68036947.

It is an arithmetic number, because the mean of its divisors is an integer number (8572623822).

Almost surely, 2^34154421643 is an apocalyptic number.

34154421643 is a deficient number, since it is larger than the sum of its proper divisors (136073645).

34154421643 is a wasteful number, since it uses less digits than its factorization.

34154421643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136073644.

The product of its digits is 138240, while the sum is 37.

Adding to 34154421643 its reverse (34612445143), we get a palindrome (68766866786).

The spelling of 34154421643 in words is "thirty-four billion, one hundred fifty-four million, four hundred twenty-one thousand, six hundred forty-three".