15115420235 has 4 divisors (see below), whose sum is σ = 18138504288. Its totient is φ = 12092336184.

The previous prime is 15115420181. The next prime is 15115420247. The reversal of 15115420235 is 53202451151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15115420235 - 2²⁶ = 15048311371 is a prime.

It is a super-3 number, since 3×15115420235³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15115420198 and 15115420207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1511542019 + ... + 1511542028.

It is an arithmetic number, because the mean of its divisors is an integer number (4534626072).

Almost surely, 2^15115420235 is an apocalyptic number.

15115420235 is a deficient number, since it is larger than the sum of its proper divisors (3023084053).

15115420235 is an equidigital number, since it uses as much as digits as its factorization.

15115420235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023084052.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 15115420235 its reverse (53202451151), we get a palindrome (68317871386).

The spelling of 15115420235 in words is "fifteen billion, one hundred fifteen million, four hundred twenty thousand, two hundred thirty-five".