194256746240 has 72 divisors (see below), whose sum is σ = 465552502128. Its totient is φ = 77661470720.

The previous prime is 194256746219. The next prime is 194256746249. The reversal of 194256746240 is 42647652491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194256746249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2432384 + ... + 2510976.

It is an arithmetic number, because the mean of its divisors is an integer number (6466006974).

Almost surely, 2^194256746240 is an apocalyptic number.

194256746240 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 194256746240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232776251064).

194256746240 is an abundant number, since it is smaller than the sum of its proper divisors (271295755888).

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

194256746240 is an equidigital number, since it uses as much as digits as its factorization.

194256746240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80545 (or 80531 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 194256746240 in words is "one hundred ninety-four billion, two hundred fifty-six million, seven hundred forty-six thousand, two hundred forty".