34178661645 has 16 divisors (see below), whose sum is σ = 54771187392. Its totient is φ = 18200176640.

The previous prime is 34178661637. The next prime is 34178661661. The reversal of 34178661645 is 54616687143.

It is not a de Polignac number, because 34178661645 - 2³ = 34178661637 is a prime.

It is a super-3 number, since 3×34178661645³ (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 15 ways as a sum of consecutive naturals, for example, 1767747 + ... + 1786976.

It is an arithmetic number, because the mean of its divisors is an integer number (3423199212).

Almost surely, 2^34178661645 is an apocalyptic number.

It is an amenable number.

34178661645 is a deficient number, since it is larger than the sum of its proper divisors (20592525747).

34178661645 is a wasteful number, since it uses less digits than its factorization.

34178661645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555372.

The product of its digits is 2903040, while the sum is 51.

The spelling of 34178661645 in words is "thirty-four billion, one hundred seventy-eight million, six hundred sixty-one thousand, six hundred forty-five".