390211486664640 has 224 divisors, whose sum is σ = 1304226024837120. Its totient is φ = 98572323926016.

The previous prime is 390211486664609. The next prime is 390211486664651. The reversal of 390211486664640 is 46466684112093.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

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, 243562849 + ... + 245159711.

It is an arithmetic number, because the mean of its divisors is an integer number (5822437610880).

Almost surely, 2^{390211486664640} is an apocalyptic number.

390211486664640 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 390211486664640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652113012418560).

390211486664640 is an abundant number, since it is smaller than the sum of its proper divisors (914014538172480).

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

390211486664640 is a wasteful number, since it uses less digits than its factorization.

390211486664640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610299 (or 1610289 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 60.

The spelling of 390211486664640 in words is "three hundred ninety trillion, two hundred eleven billion, four hundred eighty-six million, six hundred sixty-four thousand, six hundred forty".