4956643691 has 8 divisors (see below), whose sum is σ = 5121843984. Its totient is φ = 4793087520.

The previous prime is 4956643651. The next prime is 4956643739. The reversal of 4956643691 is 1963466594.

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

It is a cyclic number.

It is not a de Polignac number, because 4956643691 - 2¹⁰ = 4956642667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4956643651) 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, 404900 + ... + 416961.

It is an arithmetic number, because the mean of its divisors is an integer number (640230498).

Almost surely, 2^4956643691 is an apocalyptic number.

4956643691 is a deficient number, since it is larger than the sum of its proper divisors (165200293).

4956643691 is a wasteful number, since it uses less digits than its factorization.

4956643691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822061.

The product of its digits is 4199040, while the sum is 53.

The square root of 4956643691 is about 70403.4352215856. The cubic root of 4956643691 is about 1705.0190417059.

The spelling of 4956643691 in words is "four billion, nine hundred fifty-six million, six hundred forty-three thousand, six hundred ninety-one".