4993906976981 has 8 divisors (see below), whose sum is σ = 5551539270144. Its totient is φ = 4461058341360.

The previous prime is 4993906976977. The next prime is 4993906977001. The reversal of 4993906976981 is 1896796093994.

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 4993906976981 - 2² = 4993906976977 is a prime.

It is a super-2 number, since 2×4993906976981² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4993906976896 and 4993906976905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4993906976921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6195913961 + ... + 6195914766.

It is an arithmetic number, because the mean of its divisors is an integer number (693942408768).

Almost surely, 2^{4993906976981} is an apocalyptic number.

It is an amenable number.

4993906976981 is a deficient number, since it is larger than the sum of its proper divisors (557632293163).

4993906976981 is a wasteful number, since it uses less digits than its factorization.

4993906976981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12391828771.

The product of its (nonzero) digits is 1428513408, while the sum is 80.

The spelling of 4993906976981 in words is "four trillion, nine hundred ninety-three billion, nine hundred six million, nine hundred seventy-six thousand, nine hundred eighty-one".