12440201455 has 64 divisors (see below), whose sum is σ = 17557585920. Its totient is φ = 8366198400.

The previous prime is 12440201441. The next prime is 12440201461. The reversal of 12440201455 is 55410204421.

It is not a de Polignac number, because 12440201455 - 2¹¹ = 12440199407 is a prime.

It is a super-2 number, since 2×12440201455² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 7938082 + ... + 7939648.

It is an arithmetic number, because the mean of its divisors is an integer number (274337280).

Almost surely, 2^12440201455 is an apocalyptic number.

12440201455 is a deficient number, since it is larger than the sum of its proper divisors (5117384465).

12440201455 is a wasteful number, since it uses less digits than its factorization.

12440201455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 12440201455 its reverse (55410204421), we get a palindrome (67850405876).

The spelling of 12440201455 in words is "twelve billion, four hundred forty million, two hundred one thousand, four hundred fifty-five".