397643872000 has 576 divisors, whose sum is σ = 1114529165568. Its totient is φ = 140574720000.

The previous prime is 397643871997. The next prime is 397643872009. The reversal of 397643872000 is 278346793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397643872009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 763231740 + ... + 763232260.

It is an arithmetic number, because the mean of its divisors is an integer number (1934946468).

Almost surely, 2^397643872000 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 397643872000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557264582784).

397643872000 is an abundant number, since it is smaller than the sum of its proper divisors (716885293568).

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

397643872000 is a wasteful number, since it uses less digits than its factorization.

397643872000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 397643872000 in words is "three hundred ninety-seven billion, six hundred forty-three million, eight hundred seventy-two thousand".