1491682855680 has 216 divisors, whose sum is σ = 5162803551360. Its totient is φ = 397648281600.

The previous prime is 1491682855591. The next prime is 1491682855681. The reversal of 1491682855680 is 865582861941.

1491682855680 is a `hidden beast` number, since 1 + 4 + 9 + 1 + 68 + 2 + 8 + 5 + 568 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (1491682855681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36947505 + ... + 36987855.

Almost surely, 2^{1491682855680} is an apocalyptic number.

1491682855680 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 1491682855680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2581401775680).

1491682855680 is an abundant number, since it is smaller than the sum of its proper divisors (3671120695680).

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

1491682855680 is a wasteful number, since it uses less digits than its factorization.

1491682855680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43587 (or 43570 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 63.

The spelling of 1491682855680 in words is "one trillion, four hundred ninety-one billion, six hundred eighty-two million, eight hundred fifty-five thousand, six hundred eighty".