12270145408 has 64 divisors (see below), whose sum is σ = 24704151120. Its totient is φ = 6070251520.

The previous prime is 12270145373. The next prime is 12270145411. The reversal of 12270145408 is 80454107221.

It is a tau number, because it is divible by the number of its divisors (64).

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, 5025468 + ... + 5027908.

Almost surely, 2^12270145408 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 12270145408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12352075560).

12270145408 is an abundant number, since it is smaller than the sum of its proper divisors (12434005712).

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

12270145408 is a wasteful number, since it uses less digits than its factorization.

12270145408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855 (or 2843 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The spelling of 12270145408 in words is "twelve billion, two hundred seventy million, one hundred forty-five thousand, four hundred eight".