397132243200 has 1080 divisors, whose sum is σ = 1830890107200. Its totient is φ = 82512691200.

The previous prime is 397132243159. The next prime is 397132243237. The reversal of 397132243200 is 2342231793.

397132243200 is a `hidden beast` number, since 3 + 9 + 7 + 1 + 322 + 4 + 320 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1080).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 39911826 + ... + 39921774.

Almost surely, 2^397132243200 is an apocalyptic number.

397132243200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397132243200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915445053600).

397132243200 is an abundant number, since it is smaller than the sum of its proper divisors (1433757864000).

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

397132243200 is a wasteful number, since it uses less digits than its factorization.

397132243200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10005 (or 9977 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

Adding to 397132243200 its reverse (2342231793), we get a palindrome (399474474993).

The spelling of 397132243200 in words is "three hundred ninety-seven billion, one hundred thirty-two million, two hundred forty-three thousand, two hundred".