34445643253 has 48 divisors (see below), whose sum is σ = 42948956160. Its totient is φ = 27041704704.

The previous prime is 34445643233. The next prime is 34445643277. The reversal of 34445643253 is 35234654443.

34445643253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 34445643253 - 2²¹ = 34443546101 is a prime.

It is a super-2 number, since 2×34445643253² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34445643223) 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, 31228500 + ... + 31229602.

It is an arithmetic number, because the mean of its divisors is an integer number (894769920).

Almost surely, 2^34445643253 is an apocalyptic number.

It is an amenable number.

34445643253 is a deficient number, since it is larger than the sum of its proper divisors (8503312907).

34445643253 is a wasteful number, since it uses less digits than its factorization.

34445643253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546 (or 1529 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 43.

The spelling of 34445643253 in words is "thirty-four billion, four hundred forty-five million, six hundred forty-three thousand, two hundred fifty-three".