1385650823040 has 384 divisors, whose sum is σ = 5222116954080. Its totient is φ = 335766896640.

The previous prime is 1385650823033. The next prime is 1385650823071. The reversal of 1385650823040 is 403280565831.

1385650823040 is a `hidden beast` number, since 1 + 3 + 8 + 565 + 0 + 82 + 3 + 0 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228916654 + ... + 228922706.

Almost surely, 2^{1385650823040} is an apocalyptic number.

1385650823040 is a gapful number since it is divisible by the number (10) 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 1385650823040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2611058477040).

1385650823040 is an abundant number, since it is smaller than the sum of its proper divisors (3836466131040).

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

1385650823040 is a wasteful number, since it uses less digits than its factorization.

1385650823040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9702 (or 9687 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 1385650823040 in words is "one trillion, three hundred eighty-five billion, six hundred fifty million, eight hundred twenty-three thousand, forty".