15642361345 has 8 divisors (see below), whose sum is σ = 20214743976. Its totient is φ = 11551282176.

The previous prime is 15642361337. The next prime is 15642361367. The reversal of 15642361345 is 54316324651.

15642361345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 942981264 + 14699380081 = 30708^2 + 121241^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 15642361345 - 2³ = 15642361337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15642361298 and 15642361307.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 120325792 + ... + 120325921.

It is an arithmetic number, because the mean of its divisors is an integer number (2526842997).

Almost surely, 2^15642361345 is an apocalyptic number.

It is an amenable number.

15642361345 is a deficient number, since it is larger than the sum of its proper divisors (4572382631).

15642361345 is a wasteful number, since it uses less digits than its factorization.

15642361345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240651731.

The product of its digits is 259200, while the sum is 40.

Adding to 15642361345 its reverse (54316324651), we get a palindrome (69958685996).

The spelling of 15642361345 in words is "fifteen billion, six hundred forty-two million, three hundred sixty-one thousand, three hundred forty-five".