4918909216661 has 8 divisors (see below), whose sum is σ = 5377101438144. Its totient is φ = 4462553437920.

The previous prime is 4918909216631. The next prime is 4918909216679. The reversal of 4918909216661 is 1666129098194.

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 4918909216661 - 2⁴² = 520862705557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4918909216594 and 4918909216603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4918909216631) 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, 459105080 + ... + 459115793.

It is an arithmetic number, because the mean of its divisors is an integer number (672137679768).

Almost surely, 2^{4918909216661} is an apocalyptic number.

It is an amenable number.

4918909216661 is a deficient number, since it is larger than the sum of its proper divisors (458192221483).

4918909216661 is a wasteful number, since it uses less digits than its factorization.

4918909216661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918221371.

The product of its (nonzero) digits is 10077696, while the sum is 62.

The spelling of 4918909216661 in words is "four trillion, nine hundred eighteen billion, nine hundred nine million, two hundred sixteen thousand, six hundred sixty-one".