4721968897 has 4 divisors (see below), whose sum is σ = 4849589716. Its totient is φ = 4594348080.

The previous prime is 4721968891. The next prime is 4721968907. The reversal of 4721968897 is 7988691274.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4261608961 + 460359936 = 65281^2 + 21456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4721968897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4721968891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63810354 + ... + 63810427.

It is an arithmetic number, because the mean of its divisors is an integer number (1212397429).

Almost surely, 2^4721968897 is an apocalyptic number.

It is an amenable number.

4721968897 is a deficient number, since it is larger than the sum of its proper divisors (127620819).

4721968897 is a wasteful number, since it uses less digits than its factorization.

4721968897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127620818.

The product of its digits is 12192768, while the sum is 61.

The square root of 4721968897 is about 68716.5838571738. The cubic root of 4721968897 is about 1677.6745150533.

The spelling of 4721968897 in words is "four billion, seven hundred twenty-one million, nine hundred sixty-eight thousand, eight hundred ninety-seven".