4649539966921 has 8 divisors (see below), whose sum is σ = 4655315176064. Its totient is φ = 4643767149840.

The previous prime is 4649539966901. The next prime is 4649539966943. The reversal of 4649539966921 is 1296699359464.

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 4649539966921 - 2⁵ = 4649539966889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4649539966901) 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, 3307690 + ... + 4498876.

It is an arithmetic number, because the mean of its divisors is an integer number (581914397008).

Almost surely, 2^{4649539966921} is an apocalyptic number.

It is an amenable number.

4649539966921 is a deficient number, since it is larger than the sum of its proper divisors (5775209143).

4649539966921 is a wasteful number, since it uses less digits than its factorization.

4649539966921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196031.

The product of its digits is 680244480, while the sum is 73.

The spelling of 4649539966921 in words is "four trillion, six hundred forty-nine billion, five hundred thirty-nine million, nine hundred sixty-six thousand, nine hundred twenty-one".