10205515243 has 8 divisors (see below), whose sum is σ = 12723759360. Its totient is φ = 7952349480.

The previous prime is 10205515237. The next prime is 10205515253. The reversal of 10205515243 is 34251550201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10205515243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10205515213) 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, 66269503 + ... + 66269656.

It is an arithmetic number, because the mean of its divisors is an integer number (1590469920).

Almost surely, 2^10205515243 is an apocalyptic number.

10205515243 is a deficient number, since it is larger than the sum of its proper divisors (2518244117).

10205515243 is a wasteful number, since it uses less digits than its factorization.

10205515243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132539177.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 10205515243 in words is "ten billion, two hundred five million, five hundred fifteen thousand, two hundred forty-three".