34478618221 has 8 divisors (see below), whose sum is σ = 37684410624. Its totient is φ = 31403674560.

The previous prime is 34478618203. The next prime is 34478618231. The reversal of 34478618221 is 12281687443.

34478618221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 34478618221 - 2²¹ = 34476521069 is a prime.

It is a super-2 number, since 2×34478618221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34478618231) 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, 32711635 + ... + 32712688.

It is an arithmetic number, because the mean of its divisors is an integer number (4710551328).

Almost surely, 2^34478618221 is an apocalyptic number.

34478618221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

34478618221 is a deficient number, since it is larger than the sum of its proper divisors (3205792403).

34478618221 is a wasteful number, since it uses less digits than its factorization.

34478618221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65424371.

The product of its digits is 516096, while the sum is 46.

The spelling of 34478618221 in words is "thirty-four billion, four hundred seventy-eight million, six hundred eighteen thousand, two hundred twenty-one".