12455140064 has 48 divisors (see below), whose sum is σ = 25531084656. Its totient is φ = 5976038400.

The previous prime is 12455140043. The next prime is 12455140111. The reversal of 12455140064 is 46004155421.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 12455140064.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2219 + ... + 157845.

It is an arithmetic number, because the mean of its divisors is an integer number (531897597).

Almost surely, 2^12455140064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12455140064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12765542328).

12455140064 is an abundant number, since it is smaller than the sum of its proper divisors (13075944592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12455140064 is a wasteful number, since it uses less digits than its factorization.

12455140064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155739 (or 155731 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 12455140064 its reverse (46004155421), we get a palindrome (58459295485).

The spelling of 12455140064 in words is "twelve billion, four hundred fifty-five million, one hundred forty thousand, sixty-four".