397549632000 has 320 divisors, whose sum is σ = 1367349984000. Its totient is φ = 102356172800.

The previous prime is 397549631981. The next prime is 397549632043. The reversal of 397549632000 is 236945793.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5532301 + ... + 5603699.

It is an arithmetic number, because the mean of its divisors is an integer number (4272968700).

Almost surely, 2^397549632000 is an apocalyptic number.

397549632000 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 397549632000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683674992000).

397549632000 is an abundant number, since it is smaller than the sum of its proper divisors (969800352000).

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

397549632000 is an equidigital number, since it uses as much as digits as its factorization.

397549632000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71464 (or 71438 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 48.

The spelling of 397549632000 in words is "three hundred ninety-seven billion, five hundred forty-nine million, six hundred thirty-two thousand".