15201438505 has 16 divisors (see below), whose sum is σ = 21070658304. Its totient is φ = 10405262080.

The previous prime is 15201438481. The next prime is 15201438541. The reversal of 15201438505 is 50583410251.

It is a de Polignac number, because none of the positive numbers 2^k-15201438505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8128177 + ... + 8130046.

It is an arithmetic number, because the mean of its divisors is an integer number (1316916144).

Almost surely, 2^15201438505 is an apocalyptic number.

It is an amenable number.

15201438505 is a deficient number, since it is larger than the sum of its proper divisors (5869219799).

15201438505 is a wasteful number, since it uses less digits than its factorization.

15201438505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16258256.

The product of its (nonzero) digits is 24000, while the sum is 34.

Adding to 15201438505 its reverse (50583410251), we get a palindrome (65784848756).

The spelling of 15201438505 in words is "fifteen billion, two hundred one million, four hundred thirty-eight thousand, five hundred five".