396621523080 has 256 divisors, whose sum is σ = 1372627814400. Its totient is φ = 101760814080.

The previous prime is 396621523069. The next prime is 396621523153. The reversal of 396621523080 is 80325126693.

396621523080 is a `hidden beast` number, since 396 + 6 + 2 + 152 + 30 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5757802 + ... + 5826278.

It is an arithmetic number, because the mean of its divisors is an integer number (5361827400).

Almost surely, 2^396621523080 is an apocalyptic number.

396621523080 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 396621523080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686313907200).

396621523080 is an abundant number, since it is smaller than the sum of its proper divisors (976006291320).

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

396621523080 is a wasteful number, since it uses less digits than its factorization.

396621523080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68701 (or 68691 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 396621523080 in words is "three hundred ninety-six billion, six hundred twenty-one million, five hundred twenty-three thousand, eighty".