4657718939981 has 4 divisors (see below), whose sum is σ = 4723320615264. Its totient is φ = 4592117264700.

The previous prime is 4657718939971. The next prime is 4657718939983. The reversal of 4657718939981 is 1899398177564.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4657718939981 is a prime.

It is a super-2 number, since 2×4657718939981² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4657718939983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32800837535 + ... + 32800837676.

It is an arithmetic number, because the mean of its divisors is an integer number (1180830153816).

Almost surely, 2^{4657718939981} is an apocalyptic number.

It is an amenable number.

4657718939981 is a deficient number, since it is larger than the sum of its proper divisors (65601675283).

4657718939981 is an equidigital number, since it uses as much as digits as its factorization.

4657718939981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65601675282.

The product of its digits is 823011840, while the sum is 77.

The spelling of 4657718939981 in words is "four trillion, six hundred fifty-seven billion, seven hundred eighteen million, nine hundred thirty-nine thousand, nine hundred eighty-one".