12895394490 has 192 divisors, whose sum is σ = 37501626240. Its totient is φ = 3047815680.

The previous prime is 12895394443. The next prime is 12895394513. The reversal of 12895394490 is 9449359821.

12895394490 is a `hidden beast` number, since 12 + 8 + 9 + 53 + 94 + 490 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9391444 + ... + 9392816.

It is an arithmetic number, because the mean of its divisors is an integer number (195320970).

Almost surely, 2^12895394490 is an apocalyptic number.

12895394490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12895394490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18750813120).

12895394490 is an abundant number, since it is smaller than the sum of its proper divisors (24606231750).

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

12895394490 is a wasteful number, since it uses less digits than its factorization.

12895394490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629 (or 1626 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 12895394490 in words is "twelve billion, eight hundred ninety-five million, three hundred ninety-four thousand, four hundred ninety".