12355465515 has 64 divisors (see below), whose sum is σ = 21230069760. Its totient is φ = 6124285440.

The previous prime is 12355465453. The next prime is 12355465543. The reversal of 12355465515 is 51556455321.

It is a happy number.

It is not a de Polignac number, because 12355465515 - 2¹¹ = 12355463467 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1242192 + ... + 1252098.

It is an arithmetic number, because the mean of its divisors is an integer number (331719840).

Almost surely, 2^12355465515 is an apocalyptic number.

12355465515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12355465515 is a deficient number, since it is larger than the sum of its proper divisors (8874604245).

12355465515 is a wasteful number, since it uses less digits than its factorization.

12355465515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10052.

The product of its digits is 450000, while the sum is 42.

The spelling of 12355465515 in words is "twelve billion, three hundred fifty-five million, four hundred sixty-five thousand, five hundred fifteen".