397147767744 has 224 divisors, whose sum is σ = 1296107721216. Its totient is φ = 104512942080.

The previous prime is 397147767743. The next prime is 397147767769. The reversal of 397147767744 is 447767741793.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397147767743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8029939 + ... + 8079245.

It is an arithmetic number, because the mean of its divisors is an integer number (5786195184).

Almost surely, 2^397147767744 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 397147767744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648053860608).

397147767744 is an abundant number, since it is smaller than the sum of its proper divisors (898959953472).

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

397147767744 is a wasteful number, since it uses less digits than its factorization.

397147767744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49803 (or 49793 counting only the distinct ones).

The product of its digits is 174254976, while the sum is 66.

The spelling of 397147767744 in words is "three hundred ninety-seven billion, one hundred forty-seven million, seven hundred sixty-seven thousand, seven hundred forty-four".