4921169893641 has 27 divisors (see below), whose sum is σ = 7132247626413. Its totient is φ = 3269790119160.

The previous prime is 4921169893639. The next prime is 4921169893657. The reversal of 4921169893641 is 1463989611294.

The square root of 4921169893641 is 2218371.

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

4921169893641 is a `hidden beast` number, since 492 + 1 + 1 + 6 + 9 + 89 + 3 + 64 + 1 = 666.

It is not a de Polignac number, because 4921169893641 - 2¹ = 4921169893639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4921169823641) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2309323146 + ... + 2309325276.

Almost surely, 2^{4921169893641} is an apocalyptic number.

4921169893641 is the 2218371-st square number.

4921169893641 is the 1109186-th centered octagonal number.

It is an amenable number.

4921169893641 is a deficient number, since it is larger than the sum of its proper divisors (2211077732772).

4921169893641 is an frugal number, since it uses more digits than its factorization.

4921169893641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4962 (or 2481 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The spelling of 4921169893641 in words is "four trillion, nine hundred twenty-one billion, one hundred sixty-nine million, eight hundred ninety-three thousand, six hundred forty-one".