12254034354640 has 160 divisors (see below), whose sum is σ = 32312788099200. Its totient is φ = 4284345415680.

The previous prime is 12254034354589. The next prime is 12254034354689. The reversal of 12254034354640 is 4645343045221.

It is a super-2 number, since 2×12254034354640² (a number of 27 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 31 ways as a sum of consecutive naturals, for example, 40733575 + ... + 41033305.

It is an arithmetic number, because the mean of its divisors is an integer number (201954925620).

Almost surely, 2^{12254034354640} is an apocalyptic number.

12254034354640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12254034354640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16156394049600).

12254034354640 is an abundant number, since it is smaller than the sum of its proper divisors (20058753744560).

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

12254034354640 is a wasteful number, since it uses less digits than its factorization.

12254034354640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301845 (or 301839 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 43.

Adding to 12254034354640 its reverse (4645343045221), we get a palindrome (16899377399861).

The spelling of 12254034354640 in words is "twelve trillion, two hundred fifty-four billion, thirty-four million, three hundred fifty-four thousand, six hundred forty".