6163721641 has 8 divisors (see below), whose sum is σ = 7684640064. Its totient is φ = 4802899920.

The previous prime is 6163721527. The next prime is 6163721713. The reversal of 6163721641 is 1461273616.

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

It is not a de Polignac number, because 6163721641 - 2¹⁵ = 6163688873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6163721641.

It is not an unprimeable number, because it can be changed into a prime (6163221641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40024090 + ... + 40024243.

It is an arithmetic number, because the mean of its divisors is an integer number (960580008).

Almost surely, 2^6163721641 is an apocalyptic number.

It is an amenable number.

6163721641 is a deficient number, since it is larger than the sum of its proper divisors (1520918423).

6163721641 is a wasteful number, since it uses less digits than its factorization.

6163721641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80048351.

The product of its digits is 36288, while the sum is 37.

The square root of 6163721641 is about 78509.3729499860. The cubic root of 6163721641 is about 1833.5003862727.

The spelling of 6163721641 in words is "six billion, one hundred sixty-three million, seven hundred twenty-one thousand, six hundred forty-one".