386926994621440 has 2816 divisors, whose sum is σ = 1310861122099200. Its totient is φ = 106104449138688.

The previous prime is 386926994621437. The next prime is 386926994621441. The reversal of 386926994621440 is 44126499629683.

It is not an unprimeable number, because it can be changed into a prime (386926994621441) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 450438875731 + ... + 450438876589.

Almost surely, 2^{386926994621440} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386926994621440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655430561049600).

386926994621440 is an abundant number, since it is smaller than the sum of its proper divisors (923934127477760).

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

386926994621440 is a wasteful number, since it uses less digits than its factorization.

386926994621440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 967458816, while the sum is 73.

The spelling of 386926994621440 in words is "three hundred eighty-six trillion, nine hundred twenty-six billion, nine hundred ninety-four million, six hundred twenty-one thousand, four hundred forty".