10615131243 has 20 divisors (see below), whose sum is σ = 16285748160. Its totient is φ = 6885488592.

The previous prime is 10615131229. The next prime is 10615131253. The reversal of 10615131243 is 34213151601.

It is a happy number.

10615131243 is a `hidden beast` number, since 1 + 0 + 615 + 1 + 3 + 1 + 2 + 43 = 666.

10615131243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10615131243 - 2⁴ = 10615131227 is a prime.

It is a super-2 number, since 2×10615131243² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10615131253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1767963 + ... + 1773956.

It is an arithmetic number, because the mean of its divisors is an integer number (814287408).

Almost surely, 2^10615131243 is an apocalyptic number.

10615131243 is a deficient number, since it is larger than the sum of its proper divisors (5670616917).

10615131243 is an equidigital number, since it uses as much as digits as its factorization.

10615131243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541968 (or 3541959 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 10615131243 its reverse (34213151601), we get a palindrome (44828282844).

The spelling of 10615131243 in words is "ten billion, six hundred fifteen million, one hundred thirty-one thousand, two hundred forty-three".