1650066505655 has 16 divisors (see below), whose sum is σ = 2066231476224. Its totient is φ = 1262622160800.

The previous prime is 1650066505643. The next prime is 1650066505663. The reversal of 1650066505655 is 5565056600561.

It is not a de Polignac number, because 1650066505655 - 2¹⁶ = 1650066440119 is a prime.

It is a Duffinian number.

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, 4054730 + ... + 4443080.

It is an arithmetic number, because the mean of its divisors is an integer number (129139467264).

Almost surely, 2^{1650066505655} is an apocalyptic number.

1650066505655 is a deficient number, since it is larger than the sum of its proper divisors (416164970569).

1650066505655 is a wasteful number, since it uses less digits than its factorization.

1650066505655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425326.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 1650066505655 in words is "one trillion, six hundred fifty billion, sixty-six million, five hundred five thousand, six hundred fifty-five".