4124061885521 has 4 divisors (see below), whose sum is σ = 4124066278500. Its totient is φ = 4124057492544.

The previous prime is 4124061885511. The next prime is 4124061885529. The reversal of 4124061885521 is 1255881604214.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1930807516225 + 2193254369296 = 1389535^2 + 1480964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4124061885521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4124061885529) 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 3 ways as a sum of consecutive naturals, for example, 157196 + ... + 2876253.

It is an arithmetic number, because the mean of its divisors is an integer number (1031016569625).

Almost surely, 2^{4124061885521} is an apocalyptic number.

It is an amenable number.

4124061885521 is a deficient number, since it is larger than the sum of its proper divisors (4392979).

4124061885521 is a wasteful number, since it uses less digits than its factorization.

4124061885521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392978.

The product of its (nonzero) digits is 614400, while the sum is 47.

The spelling of 4124061885521 in words is "four trillion, one hundred twenty-four billion, sixty-one million, eight hundred eighty-five thousand, five hundred twenty-one".