34378405621 has 8 divisors (see below), whose sum is σ = 39293165120. Its totient is φ = 29464535808.

The previous prime is 34378405613. The next prime is 34378405631. The reversal of 34378405621 is 12650487343.

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 34378405621 - 2³ = 34378405613 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 (34378405631) 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, 137451 + ... + 296056.

It is an arithmetic number, because the mean of its divisors is an integer number (4911645640).

Almost surely, 2^34378405621 is an apocalyptic number.

It is an amenable number.

34378405621 is a deficient number, since it is larger than the sum of its proper divisors (4914759499).

34378405621 is a wasteful number, since it uses less digits than its factorization.

34378405621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444843.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 34378405621 in words is "thirty-four billion, three hundred seventy-eight million, four hundred five thousand, six hundred twenty-one".