4897986442021 has 8 divisors (see below), whose sum is σ = 4902493600088. Its totient is φ = 4893480000000.

The previous prime is 4897986442009. The next prime is 4897986442031. The reversal of 4897986442021 is 1202446897984.

It can be written as a sum of positive squares in 4 ways, for example, as 838739521 + 4897147702500 = 28961^2 + 2212950^2 .

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 4897986442021 - 2¹⁹ = 4897985917733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4897986442001) 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, 14024521 + ... + 14369521.

It is an arithmetic number, because the mean of its divisors is an integer number (612811700011).

Almost surely, 2^{4897986442021} is an apocalyptic number.

It is an amenable number.

4897986442021 is a deficient number, since it is larger than the sum of its proper divisors (4507158067).

4897986442021 is a wasteful number, since it uses less digits than its factorization.

4897986442021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358023.

The product of its (nonzero) digits is 55738368, while the sum is 64.

The spelling of 4897986442021 in words is "four trillion, eight hundred ninety-seven billion, nine hundred eighty-six million, four hundred forty-two thousand, twenty-one".