397755500800 has 324 divisors, whose sum is σ = 1212626332260. Its totient is φ = 128349634560.

The previous prime is 397755500797. The next prime is 397755500819. The reversal of 397755500800 is 8005557793.

It can be written as a sum of positive squares in 6 ways, for example, as 36294822144 + 361460678656 = 190512^2 + 601216^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5293896 + ... + 5368504.

It is an arithmetic number, because the mean of its divisors is an integer number (3742673865).

Almost surely, 2^397755500800 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 397755500800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606313166130).

397755500800 is an abundant number, since it is smaller than the sum of its proper divisors (814870831460).

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

397755500800 is a wasteful number, since it uses less digits than its factorization.

397755500800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74666 (or 74640 counting only the distinct ones).

The product of its (nonzero) digits is 1323000, while the sum is 49.

The spelling of 397755500800 in words is "three hundred ninety-seven billion, seven hundred fifty-five million, five hundred thousand, eight hundred".