1650219924961 has 8 divisors (see below), whose sum is σ = 1652643981800. Its totient is φ = 1647796141440.

The previous prime is 1650219924953. The next prime is 1650219924967. The reversal of 1650219924961 is 1694299120561.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 219459456225 + 1430760468736 = 468465^2 + 1196144^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1650219924961 - 2³ = 1650219924953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1650219924967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14185171 + ... + 14301031.

It is an arithmetic number, because the mean of its divisors is an integer number (206580497725).

Almost surely, 2^{1650219924961} is an apocalyptic number.

It is an amenable number.

1650219924961 is a deficient number, since it is larger than the sum of its proper divisors (2424056839).

1650219924961 is a wasteful number, since it uses less digits than its factorization.

1650219924961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136659.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 1650219924961 in words is "one trillion, six hundred fifty billion, two hundred nineteen million, nine hundred twenty-four thousand, nine hundred sixty-one".