10124255420561 has 4 divisors (see below), whose sum is σ = 10150281784500. Its totient is φ = 10098229056624.

The previous prime is 10124255420497. The next prime is 10124255420581. The reversal of 10124255420561 is 16502455242101.

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 3201862890625 + 6922392529936 = 1789375^2 + 2631044^2 .

It is a cyclic number.

It is not a de Polignac number, because 10124255420561 - 2⁶ = 10124255420497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10124255420581) 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, 13013181386 + ... + 13013182163.

It is an arithmetic number, because the mean of its divisors is an integer number (2537570446125).

Almost surely, 2^{10124255420561} is an apocalyptic number.

It is an amenable number.

10124255420561 is a deficient number, since it is larger than the sum of its proper divisors (26026363939).

10124255420561 is an equidigital number, since it uses as much as digits as its factorization.

10124255420561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26026363938.

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 10124255420561 in words is "ten trillion, one hundred twenty-four billion, two hundred fifty-five million, four hundred twenty thousand, five hundred sixty-one".