34661785645 has 4 divisors (see below), whose sum is σ = 41594142780. Its totient is φ = 27729428512.

The previous prime is 34661785637. The next prime is 34661785651. The reversal of 34661785645 is 54658716643.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54658716643 = 23 ⋅2376465941.

It can be written as a sum of positive squares in 2 ways, for example, as 7533719209 + 27128066436 = 86797^2 + 164706^2 .

It is a cyclic number.

It is not a de Polignac number, because 34661785645 - 2³ = 34661785637 is a prime.

It is a super-3 number, since 3×34661785645³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3466178560 + ... + 3466178569.

It is an arithmetic number, because the mean of its divisors is an integer number (10398535695).

Almost surely, 2^34661785645 is an apocalyptic number.

It is an amenable number.

34661785645 is a deficient number, since it is larger than the sum of its proper divisors (6932357135).

34661785645 is an equidigital number, since it uses as much as digits as its factorization.

34661785645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6932357134.

The product of its digits is 14515200, while the sum is 55.

The spelling of 34661785645 in words is "thirty-four billion, six hundred sixty-one million, seven hundred eighty-five thousand, six hundred forty-five".