1650205002061 has 32 divisors (see below), whose sum is σ = 2078982936576. Its totient is φ = 1272403080000.

The previous prime is 1650205002023. The next prime is 1650205002077. The reversal of 1650205002061 is 1602005020561.

It is a cyclic number.

It is not a de Polignac number, because 1650205002061 - 2¹¹ = 1650205000013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650205002461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10238266 + ... + 10398196.

It is an arithmetic number, because the mean of its divisors is an integer number (64968216768).

Almost surely, 2^{1650205002061} is an apocalyptic number.

1650205002061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1650205002061 is a deficient number, since it is larger than the sum of its proper divisors (428777934515).

1650205002061 is a wasteful number, since it uses less digits than its factorization.

1650205002061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161353.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 1650205002061 in words is "one trillion, six hundred fifty billion, two hundred five million, two thousand, sixty-one".