34400643623 has 8 divisors (see below), whose sum is σ = 34863632496. Its totient is φ = 33940691200.

The previous prime is 34400643619. The next prime is 34400643631. The reversal of 34400643623 is 32634600443.

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 34400643623 - 2² = 34400643619 is a prime.

It is a super-2 number, since 2×34400643623² (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 (34400643643) 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, 736298 + ... + 781623.

It is an arithmetic number, because the mean of its divisors is an integer number (4357954062).

Almost surely, 2^34400643623 is an apocalyptic number.

34400643623 is a deficient number, since it is larger than the sum of its proper divisors (462988873).

34400643623 is a wasteful number, since it uses less digits than its factorization.

34400643623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518225.

The product of its (nonzero) digits is 124416, while the sum is 35.

The spelling of 34400643623 in words is "thirty-four billion, four hundred million, six hundred forty-three thousand, six hundred twenty-three".