4639849548961 has 27 divisors (see below), whose sum is σ = 5189469254193. Its totient is φ = 4145303417640.

The previous prime is 4639849548931. The next prime is 4639849548973. The reversal of 4639849548961 is 1698459489364.

The square root of 4639849548961 is 2154031.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 4639849548961 - 2⁷ = 4639849548833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4639849548931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1397964460 + ... + 1397967778.

Almost surely, 2^{4639849548961} is an apocalyptic number.

4639849548961 is the 2154031-st square number.

4639849548961 is the 1077016-th centered octagonal number.

It is an amenable number.

4639849548961 is a deficient number, since it is larger than the sum of its proper divisors (549619705232).

4639849548961 is an frugal number, since it uses more digits than its factorization.

4639849548961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778 (or 3389 counting only the distinct ones).

The product of its digits is 1612431360, while the sum is 76.

The spelling of 4639849548961 in words is "four trillion, six hundred thirty-nine billion, eight hundred forty-nine million, five hundred forty-eight thousand, nine hundred sixty-one".