15415424243 has 8 divisors (see below), whose sum is σ = 15702313200. Its totient is φ = 15129389088.

The previous prime is 15415424231. The next prime is 15415424291. The reversal of 15415424243 is 34242451451.

It is a happy number.

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 15415424243 - 2¹⁴ = 15415407859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15415424443) 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, 176948 + ... + 249281.

It is an arithmetic number, because the mean of its divisors is an integer number (1962789150).

Almost surely, 2^15415424243 is an apocalyptic number.

15415424243 is a deficient number, since it is larger than the sum of its proper divisors (286888957).

15415424243 is an equidigital number, since it uses as much as digits as its factorization.

15415424243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426901.

The product of its digits is 76800, while the sum is 35.

Adding to 15415424243 its reverse (34242451451), we get a palindrome (49657875694).

The spelling of 15415424243 in words is "fifteen billion, four hundred fifteen million, four hundred twenty-four thousand, two hundred forty-three".