34440321645 has 48 divisors (see below), whose sum is σ = 61634506752. Its totient is φ = 17778942720.

The previous prime is 34440321631. The next prime is 34440321649. The reversal of 34440321645 is 54612304443.

34440321645 is a `hidden beast` number, since 3 + 4 + 4 + 4 + 0 + 3 + 2 + 1 + 645 = 666.

It is not a de Polignac number, because 34440321645 - 2¹⁴ = 34440305261 is a prime.

It is a super-3 number, since 3×34440321645³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34440321649) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 160824 + ... + 307806.

It is an arithmetic number, because the mean of its divisors is an integer number (1284052224).

Almost surely, 2^34440321645 is an apocalyptic number.

It is an amenable number.

34440321645 is a deficient number, since it is larger than the sum of its proper divisors (27194185107).

34440321645 is a wasteful number, since it uses less digits than its factorization.

34440321645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147162 (or 147159 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The spelling of 34440321645 in words is "thirty-four billion, four hundred forty million, three hundred twenty-one thousand, six hundred forty-five".