1659482758640 has 80 divisors (see below), whose sum is σ = 4410858228672. Its totient is φ = 568788037632.

The previous prime is 1659482758639. The next prime is 1659482758673. The reversal of 1659482758640 is 468572849561.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1340942 + ... + 2262098.

Almost surely, 2^{1659482758640} is an apocalyptic number.

1659482758640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1659482758640 is an abundant number, since it is smaller than the sum of its proper divisors (2751375470032).

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

1659482758640 is a wasteful number, since it uses less digits than its factorization.

1659482758640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924394 (or 924388 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 65.

The spelling of 1659482758640 in words is "one trillion, six hundred fifty-nine billion, four hundred eighty-two million, seven hundred fifty-eight thousand, six hundred forty".