397800361819836 has 48 divisors (see below), whose sum is σ = 1031335446398880. Its totient is φ = 132599969533440.

The previous prime is 397800361819829. The next prime is 397800361819849. The reversal of 397800361819836 is 638918163008793.

397800361819836 is a `hidden beast` number, since 3 + 9 + 78 + 0 + 0 + 361 + 8 + 198 + 3 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133542060 + ... + 136488396.

It is an arithmetic number, because the mean of its divisors is an integer number (21486155133310).

Almost surely, 2^{397800361819836} is an apocalyptic number.

397800361819836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

397800361819836 is an abundant number, since it is smaller than the sum of its proper divisors (633535084579044).

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

397800361819836 is a wasteful number, since it uses less digits than its factorization.

397800361819836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4196491 (or 4196483 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 72.

The spelling of 397800361819836 in words is "three hundred ninety-seven trillion, eight hundred billion, three hundred sixty-one million, eight hundred nineteen thousand, eight hundred thirty-six".