15235140243 has 8 divisors (see below), whose sum is σ = 20315239888. Its totient is φ = 10155900384.

The previous prime is 15235140233. The next prime is 15235140259. The reversal of 15235140243 is 34204153251.

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

It is not a de Polignac number, because 15235140243 - 2¹⁴ = 15235123859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15235140243.

It is not an unprimeable number, because it can be changed into a prime (15235140203) 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, 172396 + ... + 245337.

It is an arithmetic number, because the mean of its divisors is an integer number (2539404986).

Almost surely, 2^15235140243 is an apocalyptic number.

15235140243 is a deficient number, since it is larger than the sum of its proper divisors (5080099645).

15235140243 is a wasteful number, since it uses less digits than its factorization.

15235140243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429893.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 15235140243 its reverse (34204153251), we get a palindrome (49439293494).

The spelling of 15235140243 in words is "fifteen billion, two hundred thirty-five million, one hundred forty thousand, two hundred forty-three".