1601100455440 has 80 divisors (see below), whose sum is σ = 3939119237376. Its totient is φ = 603966809600.

The previous prime is 1601100455431. The next prime is 1601100455443. The reversal of 1601100455440 is 445540011061.

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

It is not an unprimeable number, because it can be changed into a prime (1601100455443) 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, 5997271 + ... + 6258550.

Almost surely, 2^{1601100455440} is an apocalyptic number.

1601100455440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1601100455440 is an abundant number, since it is smaller than the sum of its proper divisors (2338018781936).

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

1601100455440 is a wasteful number, since it uses less digits than its factorization.

1601100455440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12255928 (or 12255922 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 1601100455440 in words is "one trillion, six hundred one billion, one hundred million, four hundred fifty-five thousand, four hundred forty".