12154454355 has 32 divisors (see below), whose sum is σ = 19630080000. Its totient is φ = 6421548672.

The previous prime is 12154454353. The next prime is 12154454357. The reversal of 12154454355 is 55345445121.

It is an interprime number because it is at equal distance from previous prime (12154454353) and next prime (12154454357).

It is not a de Polignac number, because 12154454355 - 2¹ = 12154454353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12154454353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1346146 + ... + 1355144.

It is an arithmetic number, because the mean of its divisors is an integer number (613440000).

Almost surely, 2^12154454355 is an apocalyptic number.

12154454355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12154454355 is a deficient number, since it is larger than the sum of its proper divisors (7475625645).

12154454355 is a wasteful number, since it uses less digits than its factorization.

12154454355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9843.

The product of its digits is 240000, while the sum is 39.

Adding to 12154454355 its reverse (55345445121), we get a palindrome (67499899476).

The spelling of 12154454355 in words is "twelve billion, one hundred fifty-four million, four hundred fifty-four thousand, three hundred fifty-five".