1596661266640 has 80 divisors (see below), whose sum is σ = 4049939912256. Its totient is φ = 580571648000.

The previous prime is 1596661266601. The next prime is 1596661266647. The reversal of 1596661266640 is 466621666951.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1596661266647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20377779 + ... + 20455981.

Almost surely, 2^{1596661266640} is an apocalyptic number.

1596661266640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1596661266640 is an abundant number, since it is smaller than the sum of its proper divisors (2453278645616).

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

1596661266640 is a wasteful number, since it uses less digits than its factorization.

1596661266640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101428 (or 101422 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 58.

The spelling of 1596661266640 in words is "one trillion, five hundred ninety-six billion, six hundred sixty-one million, two hundred sixty-six thousand, six hundred forty".