256462194432 has 72 divisors (see below), whose sum is σ = 683140905216. Its totient is φ = 85415074816.

The previous prime is 256462194419. The next prime is 256462194433. The reversal of 256462194432 is 234491264652.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256462194433) 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, 770953 + ... + 1052279.

It is an arithmetic number, because the mean of its divisors is an integer number (9488068128).

Almost surely, 2^256462194432 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 256462194432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341570452608).

256462194432 is an abundant number, since it is smaller than the sum of its proper divisors (426678710784).

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

256462194432 is a wasteful number, since it uses less digits than its factorization.

256462194432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282533 (or 282519 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 48.

The spelling of 256462194432 in words is "two hundred fifty-six billion, four hundred sixty-two million, one hundred ninety-four thousand, four hundred thirty-two".