1600649994240 has 1120 divisors, whose sum is σ = 6371408989440. Its totient is φ = 381144268800.

The previous prime is 1600649994233. The next prime is 1600649994247. The reversal of 1600649994240 is 424999460061.

It is a happy number.

1600649994240 is a `hidden beast` number, since 1 + 60 + 0 + 6 + 499 + 94 + 2 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1600649994233) and next prime (1600649994247).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1600649994247) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2226216601 + ... + 2226217319.

Almost surely, 2^{1600649994240} is an apocalyptic number.

1600649994240 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 1600649994240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3185704494720).

1600649994240 is an abundant number, since it is smaller than the sum of its proper divisors (4770758995200).

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

1600649994240 is an equidigital number, since it uses as much as digits as its factorization.

1600649994240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 1600649994240 in words is "one trillion, six hundred billion, six hundred forty-nine million, nine hundred ninety-four thousand, two hundred forty".