4121799681 has 8 divisors (see below), whose sum is σ = 5500631200. Its totient is φ = 2745417312.

The previous prime is 4121799679. The next prime is 4121799691. The reversal of 4121799681 is 1869971214.

4121799681 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4121799681 - 2¹ = 4121799679 is a prime.

It is a super-2 number, since 2×4121799681² = 33978465220583403522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4121799681.

It is not an unprimeable number, because it can be changed into a prime (4121799601) 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, 608356 + ... + 615093.

It is an arithmetic number, because the mean of its divisors is an integer number (687578900).

Almost surely, 2^4121799681 is an apocalyptic number.

It is an amenable number.

4121799681 is a deficient number, since it is larger than the sum of its proper divisors (1378831519).

4121799681 is a wasteful number, since it uses less digits than its factorization.

4121799681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224575.

The product of its digits is 217728, while the sum is 48.

The square root of 4121799681 is about 64201.2436094504. The cubic root of 4121799681 is about 1603.3523048409.

The spelling of 4121799681 in words is "four billion, one hundred twenty-one million, seven hundred ninety-nine thousand, six hundred eighty-one".