34478636621 has 8 divisors (see below), whose sum is σ = 40506370464. Its totient is φ = 28933121520.

The previous prime is 34478636597. The next prime is 34478636623. The reversal of 34478636621 is 12663687443.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34478636621 - 2⁶ = 34478636557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34478636621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34478636623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120554531 + ... + 120554816.

It is an arithmetic number, because the mean of its divisors is an integer number (5063296308).

Almost surely, 2^34478636621 is an apocalyptic number.

It is an amenable number.

34478636621 is a deficient number, since it is larger than the sum of its proper divisors (6027733843).

34478636621 is a wasteful number, since it uses less digits than its factorization.

34478636621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241109371.

The product of its digits is 3483648, while the sum is 50.

The spelling of 34478636621 in words is "thirty-four billion, four hundred seventy-eight million, six hundred thirty-six thousand, six hundred twenty-one".