398209626366912 has 140 divisors (see below), whose sum is σ = 1181989886923296. Its totient is φ = 132559794432000.

The previous prime is 398209626366907. The next prime is 398209626366913. The reversal of 398209626366912 is 219663626902893.

398209626366912 is a `hidden beast` number, since 3 + 98 + 2 + 0 + 96 + 2 + 6 + 366 + 91 + 2 = 666.

It is a super-3 number, since 3×398209626366912³ (a number of 45 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398209626366913) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47248713 + ... + 55035080.

Almost surely, 2^{398209626366912} is an apocalyptic number.

398209626366912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

398209626366912 is an abundant number, since it is smaller than the sum of its proper divisors (783780260556384).

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

398209626366912 is a wasteful number, since it uses less digits than its factorization.

398209626366912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102284568 (or 102284549 counting only the distinct ones).

The product of its (nonzero) digits is 544195584, while the sum is 72.

The spelling of 398209626366912 in words is "three hundred ninety-eight trillion, two hundred nine billion, six hundred twenty-six million, three hundred sixty-six thousand, nine hundred twelve".