4397891936256 has 1120 divisors, whose sum is σ = 16302661962048. Its totient is φ = 1150439915520.

The previous prime is 4397891936227. The next prime is 4397891936341. The reversal of 4397891936256 is 6526391987934.

4397891936256 is a `hidden beast` number, since 4 + 397 + 8 + 91 + 93 + 62 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10446298926 + ... + 10446299346.

Almost surely, 2^{4397891936256} 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 4397891936256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8151330981024).

4397891936256 is an abundant number, since it is smaller than the sum of its proper divisors (11904770025792).

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

4397891936256 is a wasteful number, since it uses less digits than its factorization.

4397891936256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 619 counting only the distinct ones).

The product of its digits is 529079040, while the sum is 72.

The spelling of 4397891936256 in words is "four trillion, three hundred ninety-seven billion, eight hundred ninety-one million, nine hundred thirty-six thousand, two hundred fifty-six".