6171772645 has 8 divisors (see below), whose sum is σ = 7464443904. Its totient is φ = 4898540304.

The previous prime is 6171772631. The next prime is 6171772693. The reversal of 6171772645 is 5462771716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6171772645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6171772595 and 6171772604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4859029 + ... + 4860298.

It is an arithmetic number, because the mean of its divisors is an integer number (933055488).

Almost surely, 2^6171772645 is an apocalyptic number.

It is an amenable number.

6171772645 is a deficient number, since it is larger than the sum of its proper divisors (1292671259).

6171772645 is a wasteful number, since it uses less digits than its factorization.

6171772645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719459.

The product of its digits is 493920, while the sum is 46.

The square root of 6171772645 is about 78560.6303755259. The cubic root of 6171772645 is about 1834.2983401354.

The spelling of 6171772645 in words is "six billion, one hundred seventy-one million, seven hundred seventy-two thousand, six hundred forty-five".