16605276765040 has 40 divisors (see below), whose sum is σ = 39650708174400. Its totient is φ = 6462594199296.

The previous prime is 16605276765001. The next prime is 16605276765053. The reversal of 16605276765040 is 4056767250661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2804942440 + ... + 2804948359.

It is an arithmetic number, because the mean of its divisors is an integer number (991267704360).

Almost surely, 2^{16605276765040} is an apocalyptic number.

16605276765040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16605276765040 is an abundant number, since it is smaller than the sum of its proper divisors (23045431409360).

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

16605276765040 is a wasteful number, since it uses less digits than its factorization.

16605276765040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5609890849 (or 5609890843 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 55.

The spelling of 16605276765040 in words is "sixteen trillion, six hundred five billion, two hundred seventy-six million, seven hundred sixty-five thousand, forty".