1984095764661 has 8 divisors (see below), whose sum is σ = 2645524221120. Its totient is φ = 1322698908992.

The previous prime is 1984095764659. The next prime is 1984095764837. The reversal of 1984095764661 is 1664675904891.

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 1984095764661 - 2¹ = 1984095764659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1984095764592 and 1984095764601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1914095764661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7753305 + ... + 8005118.

It is an arithmetic number, because the mean of its divisors is an integer number (330690527640).

Almost surely, 2^{1984095764661} is an apocalyptic number.

It is an amenable number.

1984095764661 is a deficient number, since it is larger than the sum of its proper divisors (661428456459).

1984095764661 is a wasteful number, since it uses less digits than its factorization.

1984095764661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15800395.

The product of its (nonzero) digits is 78382080, while the sum is 66.

The spelling of 1984095764661 in words is "one trillion, nine hundred eighty-four billion, ninety-five million, seven hundred sixty-four thousand, six hundred sixty-one".